Merge branch 'dev'

* dev:
  license headers
  parsing of temporal filter queries (fixes #94)
  removed unused field
  temporal filtering of tracks and measurements
  temporal filter classes
  begin and end time for tracks
Updated copyright holders
Merge branch 'dev'

* dev:
  do not require phenomenons for created measurement
Merge branch 'master' of https://github.com/enviroCar/enviroCar-server

* 'master' of https://github.com/enviroCar/enviroCar-server:
  Updated copyright holders
Merge pull request #6 from enviroCar/master

re-align
disable email whitelist
Merge pull request #7 from matthesrieke/master

disable email whitelist
Merge pull request #122 from matthesrieke/dev

disable email whitelist