deleted helper functions
- put them back into their main functions
changed saved filename
- format is now [PROJECT]-[TITLE].[EXT]
- spaces were changed to underscores automatically
deleted constructor
- constructor no longer needed
- set dl path with a normal string instead of using some class
variables
fixed insert
- deleted forgotten form validation
fixed backlink
- back link shown after successfull insert pointed to wrong location
clean up of popup_view
- stripped html code out of php code
id und name aus html sind jetzt identisch

auf altes präfix "input_" wird verzichtet. Die Änderung zieht sich auch
in inerst Controller durch
Merge pull request #17 from TaoW/master