Fix URI encoding for event.trigger

[ericpearson]

This fix encodes and decodes the data arguments on event.trigger allowing for JSON objects and other information to be passed.

Fixes issue #179

[ericpearson]

@jeffheifetz r?

[nukulb]

you should probably add a test that requires some encoding

[ericpearson]

they should be covered now by the updated unit tests as everything gets encoded on the server side

[nukulb]

but the string you are passing doesn't require encoding in the tests that is

[jeffheifetz]

I agree with @nukulb, just add one more test for something that requires encoding (ie JSON) and then I'll r+

[ericpearson]

updated test with encoded strings

[jeffheifetz]

lint, unit tests and functional tests all pass. r+

[haahmad]

The manual functional tests for blackberry.system (which include battery status events) are failing

[haahmad]

I am also seeing these test fail on the next branch

[tracyli]

tested with packager build http://ci0000003863287:8080/hudson/job/BB10-Webworks-Packager/55/ and framework build http://ci0000003863287:8080/hudson/job/BB10-Webworks-Framework-event-encoding-fix/1/: no issue was found.

[nukulb]

@Pagey squash it one commit please.

[ericpearson]

squashed

[nukulb]

merged manually