added search to talk list
added order select to choose order of elements
styled dropdown choice to look better - moved style tag from html to angular controller
added talk validation
fixed tests
refactoring
createdTalk now correctly shown only once!
refactoring of talkId, now only used as url parameter not written to html
prevent saving invalid feedback entries - will destroy test - i will fix them later
only require feedback model now because feedback model is loading talk model, need to change this later when loading more models then this two
can only call feedback and attendee site with correct id now!!
refactoring