Use REST Api for submitting review

Parse message from old style command and get
review values from ParameterExpander.

GSON and Apache HTTPClient handle json conversion and
submitting of json.

The selection of review submitting method is done in
global configuration.
Store password as a secret.
Add button for testing http rest connection

Use project listing for testing and check only for status code.
Use all allowing authscope

ssh hostname migth not be the hostname of Gerrit front end.
Add License and copyright headers to new files.
Move message getters to ParameterExpander.

ParameterExpander handles other message related methods,
so it seems to be better plave.
Add topic key in Change
Add interesting pattern for topic
Implement changed parameters in GerritProject
Add topic field into jelly
Fix checkstyle error
Provide new build parameter: GERRIT_TOPIC
Add topic pattern to dynamic trigger
Coordinate tests
Update help
Fix copyright
Fix typo
Remove index.properties in GerritManagement

All contents in index.properties for GerritManagement has never been
used. So it can be removed.
Move properties for GerritManagement to GerritServer

Almost resources for GerritManagement was moved to GerritServer.
So language resources should be moved.
Add marker to added string resources