Add '\n' to the list of illegal characters in filenames.
Cleaned up, added 'material icons' license
Bugfix: Playbackhistory had wrong sort order

fixes #540
Merge branch 'illegal_filename' of git://github.com/andrey-krutov/AntennaPod into andrey-krutov-illegal_filename
Fixed:Unit tests were not finishing correctly
Squashed commit of the following:

commit 7d0e6d5c2dc75f8f1e54f4a1279c6b0cffa7b8cc
Author: daniel oeh <daniel.oeh@gmail.com>
Date:   Mon Nov 10 21:00:58 2014 +0100

    Made tests compile

commit 05c57df87dd469d8f64835700eefe2e3c87e04e4
Author: daniel oeh <daniel.oeh@gmail.com>
Date:   Mon Nov 10 20:56:58 2014 +0100

    Removed unused code

commit 0a1fbc9e6d9648646140e30dec0ec8389fb8d37f
Author: daniel oeh <daniel.oeh@gmail.com>
Date:   Thu Nov 6 15:48:24 2014 +0100

    Added UI controls to download more feed pages

    closes #245

commit 6486fb40f1d03887e264df95946f91f0a9cdac9b
Author: daniel oeh <daniel.oeh@gmail.com>
Date:   Thu Nov 6 14:49:43 2014 +0100

    Added support for downloading feed pages

commit e1faa06908bfd50f2aa0c28ee5118772c4281557
Author: daniel oeh <daniel.oeh@gmail.com>
Date:   Wed Nov 5 21:27:03 2014 +0100

    Added "paged" and "loadAllPages" attributes