Added alert graphic when obstacle triggered
New obstacle icons, Motion Detector movement trigger changed to 10 m
Added scaling of obstacles although they don't scale a great deal
Attack Screen redesign, using em for font-size, energy bar added
Changed guard behaviour - guard has vision of 60 degrees and turns 60
degrees each location change.  If the user is within the field of vision
and within 10m of the guard the user will lose energy.  Vision is based
on 360 degrees
added a list sliding panel to defend mode
slidinglayout
Implement remove mission functionality in Dashboard:
1. Remove mission 
2. Remove the obstacle create by user in that course
gray out the Set Guard funcation in DF Activne
and Mission Item when player is not in right distance.
fix a bit more
Change the DAO function to save eventually
tranmit to Imac
Shows special task
implement special task when user reach datasource.
added a list sliding panel to defend mode
slidinglayout
finish list adapter of sliding menu
sliding v1
sliding v2
test 2