Break up the search widget to work with updated UX

Break up the search widget to work with updated UX

- Split up the viewmode controls from the search widget itself.
- Update the viewmode controls widget to handle distinct fullscreen/sidebar events vs a toggle event
- Update the tests to work with both widgets properly. 


This branch does not update the minimized search to work correctly in the grand scheme of things yet.

https://code.launchpad.net/~rharding/juju-gui/new-controls/+merge/172631

Requires: https://code.launchpad.net/~huwshimi/juju-gui/visual-update-1/+merge/172738

(do not edit description out of merge proposal)

[rharding, 2013-07-02 17:39:22]

Please take a look.

[curtis, 2013-07-02 18:28:16]

Thank you Rick. These changes LGTM with the additional changes that I can see
are already added at Lp.

I see the discussion about widget vs view. I think widget is fine at this time.
This is clearly more than a view. The widget might be too heavy for this use,
but that may change in the next few weeks. That is to say, We are making this
late change to accommodate a late design. Given the urgency to get the UI
looking good, I think it is wiser to review what we don't need at the end of
July.

[rharding, 2013-07-03 12:50:02]

*** Submitted:

Break up the search widget to work with updated UX

- Split up the viewmode controls from the search widget itself.
- Update the viewmode controls widget to handle distinct fullscreen/sidebar
events vs a toggle event
- Update the tests to work with both widgets properly. 


This branch does not update the minimized search to work correctly in the grand
scheme of things yet.

R=curtis
CC=
https://codereview.appspot.com/10877043