Crisisworks 4.22.17 Hotfix Release

This release contains minor improvements and fixes:

• Requests that are assigned to a user can now be set to unassigned by setting the request status back to Requested. 
• Functionality was added to allow searching for records by multiple tags (comma separated)

• To search for records having any tags, simply comma-separate the tags: e.g. "wheelchair, inspection" will show all cases tagged with either wheelchair or inspection.
• To search for records having all tags, add a "+" to the start. For example, "+wheelchair, inspection" will show only cases that have both tags.