Add 'colors' and 'icons' fields to conduit api for Projects

Summary:
This simply adds colors, icons to ProjectQueryConduitAPIMethod and
ProjectCreateConduitAPIMethod.

Additionally, adds 'tags' to ProjectCreateConduitAPIMethod

Change-Id: Ic6332fe174a59ecfd60cea281ccb0ed938136141

Test Plan:
create a new project with project.create, specify icon, color and tags

call project.query with colors and icons args, check for results
containing matching projects.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: legoktm, aklapper, Korvin, epriestley, valhallasw, qgil

Differential Revision: https://secure.phabricator.com/D13098