Fix crash moving cursor around compose view.

No idea why we're seeing infs returned by -caretRectForPosition:.
Present icon action sheet using WYPopoverController.

WYPopoverController recently gained a "present as dialog" method that just
shows it in the center of the screen with no arrow. This properly handles
non-portrait orientations on iPhone (we were getting a crash with auto layout
spanning rotational bounds transforms).

Finally, always add the background toolbar so we don't get a white background
on iPad.
Bump version to 2.0.1.
Fix loading bookmarks past page one.
Ensure action sheet is at least 312 points wide.

It was wrapping to the width of the title :-(
Stop wallpaper from (occasionally) showing below basement.

Doesn't work consistently, so just make the background opaque.
Remove extraneous call to -updateThemedProperties.
Changes to Dark and Light themes.