Allow users to disable browse mode by default (#8846)
* Convert browse mode panel to guihelper and add option to disable activating browse mode on page load.
* Add disableBrowseModeByDefault property support for appModules, move doc string
* Removed redundant colon at the end of the 'Enable browse mode on page load' option
* Update documentation
* Remove legacy skype appModule and create a new one that disables browse mode by default
* Update what's new.
