Feature/query packager

Similar to the ACL Packager Web UI except it is driven by a query (SQL, SQL2, XPATH); most importantly it has its own Package Icon.

![crx_package_manager_-__etc_packages_query_query-1_0_0_zip](https://cloud.githubusercontent.com/assets/1451868/4347068/21fbf050-412f-11e4-9fae-521b39833370.png)

![query](https://cloud.githubusercontent.com/assets/1451868/4347072/3f79ee0c-412f-11e4-95df-eb609276c782.png)

![query](https://cloud.githubusercontent.com/assets/1451868/4347073/5b494f88-412f-11e4-8605-bf032c00abfc.png)

This is rebased off of edcd98dd8d89b2c5278e604b9f0a05feae77876f (ACL Packager - Tokens support)