introducing the googledrive and dropbox icons
Merge branch 'master' into remotestorage0.9-develop

Conflicts:
	assets/widgetCss.css
	src/assets.js
Merge branch 'master' into remotestorage0.9-develop
started googledrive implementation. rocks!
googledrive: read-only fully working.
googledrive: implemented DELETE
disabled logging by default
googledrive: implemented PUT for creating files (updating doesn't work yet)
googledrive: cleaned up localStorage usage a bit (prefix keys, clean up after ourselves etc); also restore original wireclient instance on _rs_cleanup, in case a reconnect to a remotestorage server happens afterwards.
fixed authorization with remotestorage servers
removed logging from BaseClient#getListing
dropbox-backend basics
Merge branch 'remotestorage0.9-develop' of github.com:remotestorage/remotestorage.js into remotestorage0.9-develop

Conflicts:
	src/remotestorage.js
dropbox credentials in example/index.html and some nonworking patches in the cdropboxclient
added googledrive to nocache build
dropox client connect
Merge remote-tracking branch 'upstream-write/remotestorage0.9-develop' into remotestorage0.9-develop
cleanup remotestorage:backend setting
also use BACKEND_KEY in dropboxclient
added dropbox to build