fixed wp on jsonConfig
Add support for source selection based on resize player size

* Removed sourceIndex from setSource call, only used in flash
* We should fix it by more directly storing indexes on or support
switching by flavor id. . 
* related to SUP-892, where HLS is not active and quality does not
increase as player expands.
removed uiConf from test file
Merge branch 'jsonConfig' of https://github.com/kaltura/mwEmbed into jsonConfig
Merge branch 'jsonConfig' into sourceSwitchOnResize

Conflicts:
	modules/EmbedPlayer/resources/mw.EmbedPlayerKplayer.js
	modules/KalturaSupport/tests/SourceSelector.switchOnResize.html
Merge pull request #476 from kaltura/sourceSwitchOnResize

@MichalRadwantzor already merged the substantive change with fix to source selection.