#124 add option to suggest new tag

TODO:
1. modify admin to approve tag suggestions
2. move css changes to less
Merge branch 'master' into tags_suggestions
#124 Tagging - option to suggest new tags
move css to less
Merge branch 'tags_suggestions' of https://github.com/OriHoch/Open-Knesset
Redesign about page
Add about link to footer
Usage terms anchor in about, footer links to it