Merge pull request brave#5350 from darkdh/5292

Set extension icon in context menu

Fix opening URLs and files on Windows

Fix brave#5352
Fix brave#4795

I stll need to add some automated tests for this section of code but it was also
not in testing before.

Test Plan:
- On each OS test opening .html files both whent he browser is
  started and not started.
- Type a mailto: link and http: link in Slack and click them both when
  the browser is started and not started.
- Try setting Brave as the mailto handler and not.

Auditors: @aekeus

HOTFIX: use [email protected]

which doesn’t uses [email protected] instead of [email protected], so that we get a
version of secp256k1 that builds on windows…

Auditor: @bbondy

Merge pull request brave#5298 from brave/context-menus-refined

Undefined properties and nested folders handling

Merge branch 'master' into dev-channel

Merge pull request brave#5206 from bsclifton/fix-multi-select

Context menu now works on sortableTable with no selection

Additional immutable check for rowObjects

Auditors: @bsclifton

Test Plan:
1. go to "about:history"
2. do not select anything
3. right click on an arbitrary entry
4. context menu should show

Merge pull request brave#5170 from bsclifton/fix-win32-border

Fix multiple issues discovered by testers

Merge pull request brave#5106 from brave/widevine

Add support for Google Widevine for Netflix support

Merge pull request brave#5015 from darkdh/4984

Update frameKey in aboutDetails when clone about pages