Update strings.js

update new strings
Added Localisation for the Loading... message
add missing comma
Cleaned up whitespaces and indents
Update getKeyBindings()
Only provide hints for JavaScript files (and not JavaScript within HTML files), and cleanup stale session objects when switching to non-hintable files.
Fixed errors raised by KeyBindingManager unit test
Updated addBinding()
Updated _addBinding()
Add boss variable back in
Cleaned up whitespaces and indents
Added test case for command argument being a string or an object
Fix parameter documentation
Adding back whitespace
Remove Connect favicon--just use user's (or none)
wait for provider, which waits for server to load on demand
Updated by ALF automation.
Cleaned up the handling of an existing key binding
remote virtually duplicate tests
Rollback _addBinding() changes