redesigned ProjectActivity
* added necessary pngs
* redesigned bottom bar
added right arrow to list items
split list item layout
into separate xmls
white background for thumbnail img
testDivider removed for now
has to be refactored
fixed bug with checkboxes/arrows
little hack for making headlines not clickable
headline click problem solved
added padding to sprite title
added mdpi images
Merge remote-tracking branch 'origin/master' into ProjectActivity
nearly half way there, major lin layout nesting incoming
Should be nearly final now....minor padding changes incoming.
testchanges to linear layout, before arrow

Changed to relative layout
Merge branch 'master' into adaptLookFragment
Merge branch 'master' into soundFragmentRedesign
Merge remote-tracking branch 'origin/master' into ProjectActivity
corrected checkbox padding and added list view tob margin
- changed checkbox padding 
- correct vertical centering if hide/unhide
- change image border to wrap the content correctly
- made the whole layout clickable and not just the button
added context menu entry for fireing up paintroid
Switch to paintroid now also possible through an Action Bar Menu Item,
temporarily called "Edit In Paintroid" as briefly discussed with Vesna
and Thomas.