Permissions: Do not display HTTP/HTTPS URL schemes for unique hosts

[rekmarks]

Terminology

URL components recap:

• origin: https://metamask.io:9000
• scheme or protocol: https
• port: 9000
• host: metamask.io:9000
  • Note that in our URLs, there is usually no port displayed, as almost all HTTP/HTTPS websites use default ports, and the Chrome APIs don't even bother giving the default ports to us.
  • Therefore, if the port is there at all, it's some non-default value, and I think we should display it.
• hostname: metamask.io

Changes

These changes required updates to permissions controller and selector tests. The majority of the changes (by lines) are due to changing a commonly used constant in the permissions controller tests.

Updates the permission origin string display to conform to the following:

• Show the origin on the connect and confirmation screens
  • We were already doing this.
• Show the host on the 'Connected accounts' modal title
  • Originally, it was suggested that we only show the hostname here. However, I decided to follow the conventions established by Chrome, and display the host. See also notes above on when the port is displayed.
• Show non-HTTP/HTTPS schemes on the connected sites list, but hide HTTP/HTTPS (except for the purpose of disambiguation, e.g. we'll show the scheme if the same host is connected via both HTTP and HTTPS)
  • We do this if the same host, not hostname, is connected to any set of accounts, under different schemes.
  • So, http://foo.bar can be connected to Account 1, and https://foo.bar can be connected to Account 2, and the schemes will be displayed for both sites, even if they'll never appear in the same connected sites list.
  • https://foo.bar:9000 and https://foo.bar:9001 will be displayed as foo.bar:9000 and foo.bar:9001, respectively.

These changes do not affect external domains that are extension (i.e., their domain metadata has a truthy extensionId property).

[metamaskbot]

Builds ready [72e3533]

• builds: chrome, firefox, opera
• bundle viz: background, ui, inpage, contentscript, ui-libs, bg-libs, phishing-detect
• dep viz: background
• all artifacts

Page Load Metrics (626 ± 69 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	31	92	43	17	8
		domContentLoaded	345	810	625	144	69
		load	346	812	626	144	69
		domInteractive	344	810	624	144	69

[Gudahtt]

LGTM!

[metamaskbot]

Builds ready [3559a53]

• builds: chrome, firefox, opera
• bundle viz: background, ui, inpage, contentscript, ui-libs, bg-libs, phishing-detect
• dep viz: background
• all artifacts

Page Load Metrics (618 ± 71 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	30	88	48	20	10
		domContentLoaded	374	865	617	149	71
		load	376	866	618	149	71
		domInteractive	373	864	616	149	71