* Basic gerrit sync with working gitiles web-links functionality
This adds basic support for gerrit repo code host syncing. Gerrit uses
gitiles plugin for code browsing (in most cases).
It may be usefull to allow users to provide their own web code-browsing
url templates in the future.
* Add gerrit readme update
* Remove config arg from gerrit fetchAllProjects
* Remove example urls
* Resolve comments
