Jail cleanup, pbi modifications and warden additions

- Distinguish storage add and view views

- Comment out jail import and export until properly tested and implemented

- Add instance variable to mountpoints for proper editing

- Display if mountpoint is currently mounted or not

- Change jail host display to read jail name

- Modify jail nav to remove configuration menu and only show
  configuration

- Modify urls to reflect storage changes

- Modify views to reflect storage changes

- Modify migrations to not delete existing plugin jail database tables
  so that they can be migrated with the included migration script

- Modify plugin services view not to puke when no json is returned from
  plugin. This lets us install plugins without a UI (eg: PC- BSD PBI's)

- Modify warden to have a function for getting jail unique ID's so that
  we can use it in scripts that pretend to make warden jails (like the
  included migration script).

- Modify warden scripts that need unique ID to use new function

- Create a command line migration script for migrating 8.x plugin jail
  to warden jail and integrate properly with the UI