Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: File an issue with Facebook Container
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!--
+  Feel free to ignore this Issue template if you just want to ask or suggest something. If you experience an Issue then please provide all asked information.
+
+  Also please make sure that:
+  - "Firefox will: Never remember history" in the Firefox Preferences/Options under "Privacy & Security > History" is NOT selected
+  - You are NOT using Firefox in a Private Window
+  - You can see a grayed out but ticked Checkbox with the description "Enable Container Tabs" in the Firefox Preferences/Options under "Tabs"
+-->
+- Facebook Container Version:
+- Operating System + Version:
+- Firefox Version:
+- Other installed Add-ons + Version + Enabled/Disabled-Status:
+<!-- To be able to copy & paste the full list of your Add-ons navigate to "about:support" and scroll down to "Extensions" -->
+
+
+### Actual behavior
+
+
+### Expected behavior
+
+
+### Steps to reproduce
+1.
+2.
+3.
+
+### Notes