Refactor, minor tweaks, fitSizeEqualsOriginalSize() added.
Added tooltips. PanZoomWidget now changes the cursor.
Ported panZoomWidget.js to static.
Merge pull request #44 from blackhydrogen/resource-image

Resource image
Moved tooltip images to static.
Merge pull request #45 from blackhydrogen/resource-image

Moved tooltip images to static.
Merge pull request #46 from blackhydrogen/resource-audio

Fixed various bugs associated with audio resource