FreeNAS Code

Roll up commit from ix repo

sync up with internal repo, add support for ZFS cache, log, spares, clean up GUI

Sync with ix repo r1697, fix numerous bugs, enable treemenu, turn on mps

sync with ix repo r1526, merge in datagrid

sync with ix repo, brings a whole raft of improvements to FreeNAS

merge with ix repo, adds working iSCSI, and the GUI for users/groups

Add choices for ZFS dataset. They were forgotten in yesterday's
merge.

Mega commit to merge with internal repo, adds AD, LDAP, ssh keys in database, improves migrations, and much much more

Cleanup templates

Implement Xin's proposed schema changes for LAGG:
* Create 3 LAGG Tables
+ Members Table
- device name
- options
+ Interface / Type Table
- interface (foreign key to Interfaces table)
- type (lagg protocol type)
+ Interface / Members Table
- Order Number (arbitrary integer)
- device (foreign key to LAGGMembers table)
- interface (foreign key to Interfaces table)