Hash refactor.
Tabs dispatch now.
Don't rerender details panel.
Fix uncommitted unit display.
Merge pull request #487 from jaycee/details-tabs-reload

Fix dispatching/reload errors on the charm details popout for inspector.

* Refactor dispatching to handle hashes for the charm details.
* Set up tabs dispatching.
* Setup re-rendering logic for charm details.
Merge pull request #491 from jaycee/name-uncommitted-units-right

Fix uncommitted unit display.

* When a unit is uncommitted, use it's display name.
* Don't use the displayname once the unit exists; it screws up other events
  that aren't applicable to the uncommitted unit.