 Version 6.5.4 brings several changes:

* in the search bar of OnlineSearch view, search button is moved to the end of the bar
* new way of handling sharing of youtube channels from other apps
* normal text (other than url) shared from other apps is taken by OnlineSearch view for podcast search
* preparing mediaSouces is done in IO scope preventing network access blocking Main scope
* some class restructuring and refactoring
