Initial commit
Initial add of changes screen

Gerrit changes screen was reimplemented in angular. For now it mimics
behavior of vanilla change screen (excluding account configurable
properties and handling anonymous users)

Two templates were created. One that looks exactly the same as vanilla
change screen, other that only uses Twitter Bootstrap CSS styling.
Implement angular-gerrit module
Clean up code and dont double load js dependenties
Remove old leftovers
Add license header
Don't load same CSS resources more than once
Bunch of changes from very long time

Signed-off-by: Dariusz Luksza <dariusz@luksza.org>