UI: add 2x versions of glyphish icons

- Add 2x version of glyphish icons and
  removed those not currently being used
  by the app to keep bundle size down

- Updated glyphish license file
UI: add more icon files to iGCS target
FWR Firmware updater: quick language update
UI: add remaining missing app icon sizes
Merge pull request #88 from fightingwalrus/igcs-154-add-missing-2x-art

Igcs 154 add missing 2x art