Implemented extension bridge support.
Implemented screen sharing for chrome using extension.
Added support to cancel pending getScreen calls.
Added note about Firefox support.
Refactored presentations code to support arbitrary drawing canvases and don't use hardcoded "pdf*" events.
Added support to upgrade/install extension when already running.
Fixed typo.
Added a bunch of classes to topbar buttons.
Add WebODF 0.5.1
Started adding support for ODF documents. Pages support is still TODO
Added hooks for auto or inline installation of extension.
Moved auto install to chromeExtension service.
Make sure to init chrome extension in all cases.
Updated screen sharing error messages.
Improved top bar on small views.
Merge pull request #77 from longsleep/chromeextension

Chrome extension for screen sharing
Try to get screensharing auto started after inline installation of extension.
Fixing screen sharing auto start after inline install.
Handle screen sharing media errors.
Show message when an extension is required for screen sharing.
Rebuilt translation and updated German translation.