Browser: Dutch translations

- Reverting to AOSP as much as possible
- Not using 'tab' because Google isn't consistent in this case,
  e.g. 'nieuwe tab' and 'nieuw incognitotabblad in Chrome for
  Android

Change-Id: I4d727b85a44973cd2d3398baba2139e7e406f66e
Merge "Browser: Dutch translations" into cm-10.1
Browser: Update italian translation

Change-Id: If182fd821999699909aebe553f951d8e22cc9c31
Browser: Simplified Chinese translations + Fix English Typo

Reorganized CM strings, added missing translations, as well as fix
a typo within the English strings.

Change-Id: Idbb561cf16598043ace91e159d94cacf72a4e67e
Browser: Updated Polish translation

Patch Set 2: Set for verification by Cid
Patch Set 3: Minor change

Change-Id: Id206c57dd83b8dcb2ca00619f64f85b06ea04f0c
Merge "Browser: Simplified Chinese translations + Fix English Typo" into cm-10.1
Merge "Browser: Update italian translation" into cm-10.1
Allow enabling WebSockets from Labs Preferences

Change-Id: Ia0dc06cbd4f2e8e340a8f8ee910a6310a5079d79