Re-organize and cleanup info.plist

#ignore
Use the documentation search rather than Google
Import items from Templates bundle

No reason for these to be separate bundles, merging for simplicity.
Add command for toggling type of template tag (⌃>)

Taken from the Ruby bundle.
Allow for numbers in library names
Improve scoping of variable tags

Fixes textmate/python-django-templates.tmbundle#5.
Don't allow variable names to contain }

Fixes #1.