first attempt at adding a search for events. It uses the API with the stub parameter to search for events matching a keyword, parameter
Refactored Searching  for events:
- now works with get and standardized methods
- filters search string in stead of throwing exception
- uses "stub" param from API (for now)
Merge branch 'master' of GitHub:joindin/joindin-web2 into phpetra-master

Conflicts:
	web/index.php
removing non-existent endpoints
search by title to find events