Added zoom and find buttons
Implemented the zoom box.
Implemented the find box.
Added matchCase functionality to the find box.
Added incremental find
Find box moves out of the way or becomes translucent
Made the find bar not obscure active matches, and some other small improvements
Added zoom in and out buttons and ctrl+f shortcut
Added keyboard shortcuts for zoom
Hides new API functionality when they are not available (e.g. experimental APIs not enabled).
Added stopFinding('activate') functionality
Cleaned up the css a bit.
Moved the find box intersection conditions to a helper method.
Merge pull request #206 from pauldylanmeyer/master

Added zoom and find-in-page functionality.