Provide conflict UX for boolean config values

Provide conflict UX for boolean config values

- We can't use the valueChange event for checkboxes
- Add support for get/set of the values on the checkbox. We want a bool,
	true/false, based on .get('checked')
- The conflict UX needs to have a node added to supply the * backgroud image
and removal when done
- Add a test to walk through setting up the input, having it show as midified,
	conflicted, and resetting back to normal display.

We need to get with UX and get a final design for a conflict. This is a
temporary until we get that design.

QA Instructions:

- Deploy the mediawiki charm
- Go to the config and check the 'debug' field.
- It should show as modified.
- Go to the console and enter
    var s = app.db.services.item(0); var c = s.set('config.debug', true);
- Note it goes into conflict mode
- Click the conflict icon, choose to clear it, and returns to state.

https://code.launchpad.net/~rharding/juju-gui/conflict-checkbox/+merge/183929

(do not edit description out of merge proposal)

[rharding, 2013-09-04 16:51:33]

Please take a look.

[rharding, 2013-09-05 11:24:19]

Please take a look.

[rharding, 2013-09-05 11:43:42]

Please take a look.

[rharding, 2013-09-05 13:19:12]

Please take a look.

[gary.poster, 2013-09-05 13:57:07]

LGTM without qa

https://codereview.appspot.com/13368049/diff/8001/app/views/inspector.js
File app/views/inspector.js (right):

https://codereview.appspot.com/13368049/diff/8001/app/views/inspector.js#newc...
app/views/inspector.js:1067: '_clearModified': function(node) {
I kinda wish we had docs for these, but I can look past it. :-)

[jeff.pihach, 2013-09-05 16:07:59]

qa ok

[rharding, 2013-09-05 16:14:33]

*** Submitted:

Provide conflict UX for boolean config values

- We can't use the valueChange event for checkboxes
- Add support for get/set of the values on the checkbox. We want a bool,
	true/false, based on .get('checked')
- The conflict UX needs to have a node added to supply the * backgroud image
and removal when done
- Add a test to walk through setting up the input, having it show as midified,
	conflicted, and resetting back to normal display.

We need to get with UX and get a final design for a conflict. This is a
temporary until we get that design.

QA Instructions:

- Deploy the mediawiki charm
- Go to the config and check the 'debug' field.
- It should show as modified.
- Go to the console and enter
    var s = app.db.services.item(0); var c = s.set('config.debug', true);
- Note it goes into conflict mode
- Click the conflict icon, choose to clear it, and returns to state.

R=gary.poster, jeff.pihach
CC=
https://codereview.appspot.com/13368049