Reformatted, moved temporary content variables from the chrome window to the content document
Code Cleanup
build script changes
Revert "build script changes"

This reverts commit b4c10cec8658574cba6f584ff62c14087def2b00.
git cleanup
Debug changes
Quite a large code cleanup in the scroll zooming area. Removed certain options for scroll zooming to simplify the code
Massive code cleanup
Fixed bug with walkthrough screen initialisation
Minor renaming changes
Open up a fresh install tab in thunderbird after the extension is installed
Generic code cleanup
Typo
Replace unicode clockwise and anticlockwise characters in did as they didn't render very well under windows
Updated readme with a link to the imagezoom website
Merge branch 'release/0.5.0'