temp update

transparensy, appicon, loading
temp update

saving
Change SlideME DDA URL
Fix info about app title on SlideMe
toString added
updated according to last spec version
fixed category type issue
temp update

bugs
added schema validation
parser update
parser update
Added xml validation test
commented code removed
removed output
test update
categories model update
moved scheme to field
subcategory support
temp update

errors, bugs
Merge pull request #103 from slidemedev/slideme-fixes

Slideme fixes