Customizable URL Bar and more changes (see comments)

URL bar backdrop color can now be selected, the bar will be translucent in color depending on ActionBarTransparency. Other minor changes include:
- reformatting of code
- added .gitignore
- removed bin and gen folder from repo

EDIT: Now includes the recent changes from PowerPoint45/LucidBrowser
EDIT2: Now includes new side bar theme "Custom"