Enable disconnecting a single or all accounts

[rekmarks]

• Enables disconnecting a single or all accounts via the ConnectedSites popover
  • Disconnecting the single, last account from a site is equivalent to disconnecting all accounts
    • Therefore the, Disconnect all accounts option is displayed conditionally
  • The two different Popover components rendered by ConnectedSites have been factored out into two different render methods.

Result

[metamaskbot]

Builds ready [7100a36]

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

Page Load Metrics (641 ± 13 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	29	43	36	5	2
		domContentLoaded	597	694	640	27	13
		load	598	696	641	27	13
		domInteractive	596	694	639	27	13

[metamaskbot]

Builds ready [44c5a61]

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

Page Load Metrics (660 ± 17 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	30	39	34	3	1
		domContentLoaded	610	734	658	35	17
		load	612	736	660	35	17
		domInteractive	610	734	658	35	17

[Gudahtt]

LGTM!