Various bug fixes.

Hides gray ios 6 web view scroll gradient.

Fix for history not showing random icon.

Fix for invalid token when saving edits.

Edit text view now scrolls to keep cursor onscreen.

The keyboard had been covering the text insertion point.

Fix for iOS 7 edit text view jumpy scrolling.

Fix for edit text view scrolling margin.

Nav button sometimes not returning to deselected color fix.

Narrower iPad table of contents width.

Made nav buttons do very slight animation like menu buttons.

Change-Id: Ic53928278c7dc93fc4ff3284413f28c60388bf7b