update and outsource default header values
Merge branch 'master' of gh:Catrobat/Catty into issue#84

* 'master' of gh:Catrobat/Catty:
handle serialization for program- and script-classes
add xml-declaration + log parsed document
cont'd work on serialization
support optional values in xml-header
finished serialization for most bricks
serialization for some missing bricks
preparation for references
fix tag name for loop end bricks
references for iflogicelse- and loopendbricks
remove some old TODOs
Merge branch 'master' of gh:Catrobat/Catty into issue#84

* 'master' of gh:Catrobat/Catty: (74 commits)
  fix wrong license problem
  add bezel view + saved bezel view notification
  outsource loadingview to base class + show it during all actions
  readd removed lines from #229
  rename WebViewController to BaseWebViewController
  fix compile error
  fix merge bug
  fix navigation bar hidden and tint color after dismiss
  fixes #293
  fixes #305
  fixes #306
  small bugfix
  remove deprecated tests
  fixes #233
  implement rename looks
  finished copying looks + some enhancements
  implement copying looks
  fixes #261
  HelpView alert when program is already in the memory
  fix last program bug after a program is renamed
  ...

Conflicts:
	src/Catty/Header.m
	src/Catty/Look.h
	src/Catty/Look.m
	src/Catty/Program.m
	src/Catty/Script.h
	src/Catty/Script.m
	src/Catty/Sound.h
	src/Catty/Sound.m
	src/Catty/SoundsTableViewController.m
	src/Catty/SpriteObject.h
	src/Catty/SpriteObject.m
make uniqueName method much more smarter
fix look-name bug when importing image
fix mistake in copy object
fixes #307
Merge branch 'master' of gh:Catrobat/Catty into issue#84

* 'master' of gh:Catrobat/Catty:
  small change for loading indicator place in view
  fixed scaled placeholder
  fixes #177
  featured cells
  exclude downloaded program from iCloud backup
  fixed placeholder view label word wrap, fixed glitch with placeholder view in script view
  changed brick animation position
  fixed top separator line
  fixes #278
  uncomment translated strings of BrickCell titles

Conflicts:
	src/Catty/AppDefines.h
	src/Catty/BrickDetailViewController.m
	src/Catty/ProgramTableViewController.m
add introduction view + icons
disable saveToDisk for first release