Browser: Fix browser force close

Issue: Cursor was accessed by handler thread
       when it was closed. During Orientation change,
       BrowserBookmarksPage#onDestroyView is called
       which clears all the loaders [and cursors].
       Simultaneously ThreadedCursorAdapter#loadRowObject
       is getting called which then calls
       BrowserBookmarksAdapter#getRowObject
       where closed cursor is accessed and force close happens.

Fix: Synchronized cursors wrt main thread and handler thread.
     Checked mCursorAdapter for invalid conditions

CRs-Fixed: 576176
Change-Id: I9f16c2f1a55f35e8256bbf56afce3538850f9d42
Browser: LT translaions

Port CM 10.2 strings to CM 11.0

Change-Id: Iaa6e87cece4d35a59087ed84218a73682de6dbb1
Merge "Browser: LT translaions" into cm-11.0
Browser: CS translation

- fixed type and header

Change-Id: Icebff39fe6e00cf0c6bed9164109a4c678273da6
Revert "Browser: disable incognito mode"

This reverts commit 5623a091605bf1d88687dc589a61ee6b54c554fe.

 This is the 2nd commit message:

Revert "Browser: fix pie crash"

This reverts commit 06929f1b1103f5a5651a8fc71e6b6e6b10bde71d.

Change-Id: I23f2e34ee125785bba8981f0611ba4986a9beaab
Implement client-side incognito mode

Since WebView deprecated privateBrowsing in API 17 (and killed it
for good in API 19), we were left without incognito in the Browser
app. Follow the docs' recommendations and implement it with "manual"
control of privacy-related engine options

* Internally track incognito state for tabs
* Disable all forms of storage and cache on private webviews
* Disable all cookie activity while an incognito tab is active
* Stop trying to use the deprecated "privateBrowsing" argument
  when creating webViews, always set to false

Change-Id: I23f2e34ee125635bba8981f0711ba4986a9beaab
Show a startup page in incognito mode

Change-Id: Ib1d4be6890c81b73a46f026b6fcbb2f1e8de567d
Browser: LT translations

Improved translations

Change-Id: I901d77916658915eeff03c27d0df0a4c2eac2293
Browser: correct copyright notices

Change-Id: I857f6f5eb7f8c3725735078b3d3c9297e7151bd7
Always show the action bar overflow

As with native action bars.

Change-Id: I460ee02b370d7f220a8702d2e7644a7c775e3b21