Fix #1590: Update licenses file. Add licenses setting option.

[iccub]

Summary of Changes

This pull request fixes issue #1590

Submitter Checklist:

• Unit Tests are updated to cover new or changed functionality
• User-facing strings use NSLocalizableString()

Test Plan:

Open Settings -> About -> Licenses. Confirm it contains MPL license and licenses of dependencies

Screenshots:

Reviewer Checklist:

• Issues include necessary QA labels:
  • QA/(Yes|No)
  • release-notes/(include|exclude)
  • bug / enhancement
• Necessary security reviews have taken place.
• Adequate unit test coverage exists to prevent regressions.
• Adequate test plan exists for QA to validate (if applicable).
• Issue is assigned to a milestone (should happen at merge time).

[iccub]

I ordered dependency licenses to match structure of cartfile

[Brandon-T]

Hmm it flickers a little when I expand the cells and they have a weird padding but I think this is just due to HTML being rendered instead of native.

Also, if the cell is at the bottom of the screen and I expand, it doesn't push up atm. I guess we can fix this later. For now, code is good.

[iccub]

Blocking until @jhreis review and/or sec review

[iccub]

@Brandon-T yeah, I didn't change the html implementation from what we had from upstream

[jhreis]

This looks programmatically good to me. I am waiting on some final wording, so not merging right now.

update: received confirmation that this is gtg for now (see #1780 (comment) for more info)

[jhreis]

We very likely will improve upon this in the future (e.g. better text information, tag linking), but this meets what we need so merging this.