Localisation updates from https://translatewiki.net.

Change-Id: I8690353caa7a764e61e21ee02c9b7685f359e826
Table of contents ux refinement.

Fix for image taps causing mobile web site to load.

Edit icons now take action on touch up instead of
touch down so attempting to scroll and having the
scroll touch down on an edit icon no longer jumps
to edit screen.

Table of contents images seamlessly update if
downloaded while table of contents is onscreen.

Fixed bug with article scroll position not being
remembered if it was scrolled all the way to the top.

Table of contents can be dragged to show and dismiss.

Change-Id: I0cbe74ece7ad3cf61295d3b23fa31f99a62ff4fc
Merge "Table of contents ux refinement."
Localisation updates from https://translatewiki.net.

Change-Id: I129c028d798469e29b674b513bb262521f13ed19
Table of contents revealed via swipe instead of drag.

For now performance was too poor on iOS 6 to redraw
continuously during drag event.

There's still an unacceptably long delay on 3gs on
large articles between the time the table of contents
is tapped and the time it is initialized. More
updates in near future for this.

TOC drag disabled if there's no article loaded yet.

Pull to refresh disabled if there's no article loaded.

History, saved pages, search results and language picker
no longer use blue table cell selection color on iOS 6.

Change-Id: I67175f141902193c1290cc1307dabb5d14152c74