added rest call to angular
removed some unused folders
it is now possible to create talks
error handling during creating talk
responsive style
success message and redirect after creating talk
refactoring
refactoring name of success variable
some corrections to error handling
combined talk and feedback - now individual feedback is possible - qa code can be generated with the id and we can also show real statistics for each talk
adjusted readme.md cause no single pages available anymore - need to create a talk to give feedback and see the wall