Add is:watched filter

Add a new option, -w/--watched, which will show all changes for all
watched projects configured on your account in gerrit.
Merge pull request #4 from russellb/watched-filter

Add is:watched filter
Add option for starred commits
Add ability to specify operator for joining query elements.

This lets you do things like "project AND starred"
Use a different character in the header for OR operator queries
Fix dump_gerrit() arguments needing operator
Allow multiple values for a given filter predicate
Add support for multiple projects.
Only set 'is' if it will be used or it's busted.
Merge pull request #5 from russellb/multiple-projects

Add support for multiple projects
Adds SSH key passphrase support
Fix using operator between filters_query and projects_query
Merge pull request #6 from timello/master

SSH key passphrase support
Merge branch 'master' of http://github.com/kk7ds/openstack-gerrit-dashboard
Fixes when --ssh_key_passphrase is omitted.
Merge pull request #7 from timello/master

Fixes when --ssh_key_passphrase is omitted.
Removes -P option and asks for SSH key passphrase if needed.

This change removes the -P option and retry to connect if
paramiko raises PasswordRequiredException.
Fix stitching together all the various query parts
Merge pull request #9 from timello/master

Removes -P option and asks for SSH key passphrase if needed.
The main query and the status:open query should always be ANDed