Adding support to list merged and abandoned changes for a project.

This make it's possible to list all merged or abandoned changes
for a given project in gerrit. Depending on which change status the
change has we will open diffrent project view when clicking on the
project name link.

For example if a change is MERGED we will show all merged changes
for that project.

If we can't determine the status for the project link we will
fallback to open project view.

Change-Id: I574b992dbce6f9c236c4088ebf0384012846cba9
Signed-off-by: Lars Dunemark <lars.dunemark@netville.se>
Signed-off-by: Shawn O. Pearce <sop@google.com>
13 files changed