Fix crash when hitting posts by user. (Webview javascript-thread triggering UI update outside main thread -> crash.)
Fix for posts-by-user not updating pagecount.
Hit back when viewing single-user posts to return to thread. Add notice to screen when in single-user mode.
Strip out thread-draft DB join and threadview saved-reply notice, so we can simplify it to only exist in the reply activity.
Hide thread tab when launching the app at first or whenever no thread is visible.
Add progress notification to mark-last-read. Starting a notification before a previous message finishes will now immediately close the old message. Fix crashes when displayAlert is called from secondary thread.
Only pass to handler if we are actually on a secondary thread.
Fix cache handling for locales that don't append +00:00.
Save draft overhaul. Replies are saved in the DB, but only if needed instead of the old method that used the DB for every stage of the reply process. A popup will confirm if the user wants to use the saved draft, but inside the reply activity instead of the thread activity. The draft logic is smarter, it won't try to recover a quote when you are editing or vice versa.

Removed icon-theme setting since it's completely obsolete and unused.
Prevent saved quotes/replies from overwriting an edit draft.
Merge pull request #232 from Geekner/master

Saved draft overhaul and regression fixes.