fixes in grid layout, timeline test implemented
Merge remote-tracking branch 'origin/app' into app

Conflicts:
	app/de/htwg/seapal/web/views/logbook.scala.html
	app/de/htwg/seapal/web/views/logbookContent/entries.scala.html
Merge remote-tracking branch 'origin/app' into app

Conflicts:
	app/de/htwg/seapal/web/views/logbookContent/header.scala.html
	app/de/htwg/seapal/web/views/logbookContent/timeline.scala.html
	public/css/logbook.css
	public/lib/timeline/css/timeline.css
Merge remote-tracking branch 'origin/app' into app

Conflicts:
	app/de/htwg/seapal/web/views/logbookContent/header.scala.html
	app/de/htwg/seapal/web/views/logbookContent/timeline.scala.html
	public/css/logbook.css
	public/lib/timeline/css/timeline.css