Added serialization, initialization, settings
Settings updated
Merge remote-tracking branch 'origin/marcus-0.7.2' into merge-marcus-+-master-to-v0.7.3

Conflicts:
	application/v1_0/mad2013_itslearning/src/com/example/mad2013_itslearning/ExpandableListAdapter.java
	application/v1_0/mad2013_itslearning/src/com/example/mad2013_itslearning/MainActivity.java

Will try to fix conflicts.
Conflics resolved

Also re-instated the old progress dialog
Fixed issue with no internet == no content
Fixed a misspelling
Nothing important
Merge branch 'master' of https://github.com/Balkanbomb/Itslearning
Merge branch 'Rodrigo' into temp-merge-Rod2
Merge branch 'temp-merge-Rod2'
Moved all file handling to FeedManager
Merge remote-tracking branch 'origin/marcus-0.7.3' into marcus-073-merge-with-rodrigo-master
Added Sanels notification source
Version 0.7.4

* HISTORY:
* 0.7.4
*  o moved all file handling to FileManager
*  o code and comments cleaned up
*
* 0.7.3
*  o merged two branches (unknown version) with 0.7.2
*  o course colors in the UI
*  o fixed text overflow in the UI
*
* 0.7.2
*  o added saving/loading of articles to/from cache
*  o load saved articles and initialize list on app start
*  o removed unused code
Updated gitignore
Some changes
Notification changes
notification changes
notification changes
notification changes