some style fixes for calendar
some style fixes for calendar

pixelipo/server,endsguy/server,michaelletzgus/nextcloud-server,pmattern/server,whitekiba/server,owncloud/core,endsguy/server,andreas-p/nextcloud-server,pixelipo/server,sharidas/core,bluelml/core,Ardinis/server,Ardinis/server,nextcloud/server,owncloud/core,lrytz/core,bluelml/core,jbicha/server,endsguy/server,bluelml/core,endsguy/server,xx621998xx/server,cernbox/core,Ardinis/server,nextcloud/server,pmattern/server,whitekiba/server,IljaN/core,pmattern/server,IljaN/core,pollopolea/core,andreas-p/nextcloud-server,Ardinis/server,bluelml/core,andreas-p/nextcloud-server,owncloud/core,andreas-p/nextcloud-server,cernbox/core,lrytz/core,pollopolea/core,nextcloud/server,bluelml/core,whitekiba/server,cernbox/core,michaelletzgus/nextcloud-server,IljaN/core,lrytz/core,sharidas/core,michaelletzgus/nextcloud-server,pollopolea/core,endsguy/server,whitekiba/server,xx621998xx/server,phil-davis/core,andreas-p/nextcloud-server,sharidas/core,sharidas/core,pollopolea/core,xx621998xx/server,cernbox/core,sharidas/core,pollopolea/core,nextcloud/server,cernbox/core,IljaN/core,jbicha/server,lrytz/core,jbicha/server,IljaN/core,pixelipo/server,jbicha/server,owncloud/core,Ardinis/server,pixelipo/server,xx621998xx/server,xx621998xx/server,pmattern/server,michaelletzgus/nextcloud-server,pmattern/server,owncloud/core,whitekiba/server,pixelipo/server,jbicha/server,lrytz/core