Fix jQuery 1.9 support in checkbox toggler

[ai]

Fix issue #1872 with Toggle All function for batch actions

[pomnikita]

+1

[ariabov]

+1

[EddM]

+1, but there's some similar use of attr() in the specs that should probably be updated to use prop(), also.

Edit: and should also be updated to test against jquery 1.9?

[macfanatic]

Can you update the test suite to actually test the scenario you've fixed? If so, I'll gladly merge this in as it's bugging me in my projects as well.

[ai]

Um… I think support fixes doesn’t need tests, because test willn’t pass without jQuery 1.9. Also it will very bad, to have special tests for every jQuery release. Like test, that we doesn’t have .live calls.

[macfanatic]

Was more of a question in theory than if you would do it, I'm not a JS expert :) You bring up an excellent point however.