Add several b.m.o links (#871)

* Add several b.m.o links

* Fix

activities.json

@@ -260,7 +260,7 @@
     "ciuName": "mdn-css_at-rules_property",
     "description": "The @property rule represents a custom property registration directly in a stylesheet without having to run any JS.",
     "id": "at-property",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1684605",
     "mozPosition": "positive",
     "mozPositionDetail": "Having a declarative registration mechanism for custom properties is a good addition to CSS Properties and Values API.",
     "mozPositionIssue": 331,
@@ -272,7 +272,7 @@
     "ciuName": null,
     "description": "This specification defines the ::part() and ::theme() pseudo-elements on shadow hosts, allowing shadow hosts to selectively expose chosen elements from their shadow tree to the outside page for styling purposes.",
     "id": "css-shadow-parts",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1619579",
     "mozPosition": "positive",
     "mozPositionDetail": null,
     "mozPositionIssue": 59,
@@ -371,7 +371,7 @@
     "ciuName": null,
     "description": "This draft defines additions to CSSOM to make CSSStyleSheet objects directly constructable, along with a way to use them in DocumentOrShadowRoots.",
     "id": "construct-stylesheets",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1773147",
     "mozPosition": "positive",
     "mozPositionDetail": null,
     "mozPositionIssue": 103,
@@ -383,7 +383,7 @@
     "ciuName": null,
     "description": "This proposal adds an API for prompting and querying the user\u2019s contacts for one or more items with a handful of contact properties.",
     "id": "contact-picker",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1756767",
     "mozPosition": "defer",
     "mozPositionDetail": "This API innovates in some ways beyond several previous Contacts APIs, though uses different properties than HTML autofill field names.",
     "mozPositionIssue": 153,
@@ -395,7 +395,7 @@
     "ciuName": null,
     "description": "This document defines a mechanism by which a web page can embed a nested browsing context if and only if it agrees to enforce a particular set of restrictions upon itself.",
     "id": "cspee",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1391244",
     "mozPosition": "neutral",
     "mozPositionDetail": "This specification allows sites to specify minimum CSP policies for embedded content. The risk of problems arising from misalignment between different policies is managed well. The resulting complexity is not trivial, but it is balanced against the security improvements.",
     "mozPositionIssue": 326,
@@ -479,7 +479,7 @@
     "ciuName": "custom-elementsv1",
     "description": "A way to create new HTML elements implemented through JavaScript.",
     "id": "custom-elements",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1438627",
     "mozPosition": "positive",
     "mozPositionDetail": "A welcome successor to XBL!",
     "mozPositionIssue": 60,
@@ -740,7 +740,7 @@
     "ciuName": "mdn-api_htmlvideoelement_requestvideoframecallback",
     "description": "<video>.requestVideoFrameCallback() allows web authors to be notified when a frame has been presented for composition.",
     "id": "requestVideoFrameCallback",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1800882",
     "mozPosition": "positive",
     "mozPositionDetail": "This is intended to allow web authors to do efficient per-video-frame processing of video, such as video processing and painting to a canvas, video analysis, or synchronization with external audio sources.",
     "mozPositionIssue": 250,
@@ -964,7 +964,7 @@
     "description": "This specification extends MediaStreamTrack to let web applications provide an optional media-content hint attribute. This helps sinks like RTCPeerConnection or MediaRecorder select encoder parameters and processing algorithms appropriately based on a hint about the nature of the content being consumed without having to examine the actual content.",
     "id": "mst-content-hint",
     "mdnUrl": null,
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1831521",
     "mozPosition": "positive",
     "mozPositionDetail": "Content Hints is a welcome higher-level abstraction that does not require broad knowledge and tuning of video encoder, audio-processing, and congestion controls directly. Early concerns over lack of specificity around how hints interact with the lower-level controls they complement have been addressed.",
     "mozPositionIssue": 101,
@@ -1088,7 +1088,7 @@
     "ciuName": "background-sync",
     "description": "This specification describes a method that enables web applications to synchronize data in the background.",
     "id": "periodic-background-sync",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1547906",
     "mozPosition": "negative",
     "mozPositionDetail": "We're concerned that this feature would allow users to be tracked across networks (leaking private information about location and IP address and how they change over time), and that it would allow script execution and resource consumption when it isn't clear to the user that they're interacting with the site.  We might reconsider this position given evidence that these concerns can be safely addressed, however, addressing them for periodic background sync appears substantially harder than doing so for one-off background sync.",
     "mozPositionIssue": 214,
@@ -1101,7 +1101,7 @@
     "description": "The Permissions Standard defines common infrastructure for other specifications that need to interact with browser permissions. It also defines an API to allow web applications to query and request changes to the status of a given permission.",
     "id": "permissions",
     "mdnUrl": "https://developer.mozilla.org/en-US/docs/Web/API/Permissions_API",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1105827",
     "mozPosition": "positive",
     "mozPositionDetail": "Mozilla believes that the ability to work with user permissions is critical for user agency. There are certain aspects of the API that are not suitable for the permissions model used in Firefox and so we would like to work on improving several aspects of the API. In particular, we think that the way that status of permissions needs to more accurately reflect the different states that exist or could exist. We also think that the interactions with Feature Policy need to be better clarified. We're committed to fixing this, because permissions has become critical in making the web a more capable platform and it is important to ensure that we preserve user control over their online experience.",
     "mozPositionIssue": 19,
@@ -1162,7 +1162,7 @@
     "description": "Specification of the Priority Hints feature.",
     "id": "priority-hints",
     "mdnUrl": null,
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1797715",
     "mozPosition": "positive",
     "mozPositionDetail": "Priority hints allow sites to provide information about how subresources on a page might be prioritized for fetching. This can allow the browser to override parts of the internal prioritization heuristics that are used for resource fetching, which could improve page load performance.",
     "mozPositionIssue": 606,
@@ -1320,7 +1320,7 @@
     "ciuName": "shadowdomv1",
     "description": "A way to give a node in the DOM a hidden subtree in which the children of the node can be inserted.",
     "id": "shadow-trees",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1438607",
     "mozPosition": "positive",
     "mozPositionDetail": "A welcome successor to XBL!",
     "mozPositionIssue": 60,
@@ -1494,7 +1494,7 @@
     "ciuName": null,
     "description": "In Transport Layer Security (TLS) handshakes, certificate chains often take up the majority of the bytes transmitted. This document describes how certificate chains can be compressed to reduce the amount of data transmitted and avoid some round trips.",
     "id": "tls-certificate-compression",
-    "mozBugUrl": null,
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1548723",
     "mozPosition": "positive",
     "mozPositionDetail": "Compression of certificates should provide some performance advantages.",
     "mozPositionIssue": 96,