code cleanup activities
-Save item price
- unused exception from PeristenceManager-methods removed
renamed package sidelist->ch.unibe.ese.sidelist
Changed the Icon, deloaded it a bit
Added buttons (not working yet), enter list after creating
Added functions for buttons
Created ShareListActivity
Changed app icon
Removed hardcoded strings

rearranged strings.xml by activity
Small Bugfix
Merge remote-tracking branch 'origin/sync'

Conflicts:
	Code/ShoppingList/src/ch/unibe/ese/activities/HomeActivity.java
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team8

Conflicts:
	Code/ShoppingList/src/ch/unibe/ese/activities/HomeActivity.java
	Code/ShoppingList/src/ch/unibe/ese/activities/ShoppingListActionMode.java
Fixed merge error
Another merge error fixed
Merge remote-tracking branch 'origin/master' into sync