Change to 24H format instead of 12H format
Change to 24H format instead of 12H format

Update how the time shows in WebUI.

My first PR to core, woha. :)
cernbox/core,lrytz/core,endsguy/server,IljaN/core,whitekiba/server,bluelml/core,sharidas/core,michaelletzgus/nextcloud-server,jbicha/server,owncloud/core,xx621998xx/server,xx621998xx/server,whitekiba/server,IljaN/core,sharidas/core,endsguy/server,bluelml/core,whitekiba/server,andreas-p/nextcloud-server,sharidas/core,cernbox/core,bluelml/core,pmattern/server,michaelletzgus/nextcloud-server,owncloud/core,owncloud/core,andreas-p/nextcloud-server,nextcloud/server,phil-davis/core,Ardinis/server,IljaN/core,cernbox/core,andreas-p/nextcloud-server,nextcloud/server,pmattern/server,pmattern/server,pixelipo/server,jbicha/server,IljaN/core,pollopolea/core,pollopolea/core,lrytz/core,pollopolea/core,andreas-p/nextcloud-server,sharidas/core,whitekiba/server,xx621998xx/server,nextcloud/server,pmattern/server,pixelipo/server,pollopolea/core,lrytz/core,pollopolea/core,andreas-p/nextcloud-server,pmattern/server,nextcloud/server,Ardinis/server,lrytz/core,owncloud/core,jbicha/server,Ardinis/server,owncloud/core,sharidas/core,Ardinis/server,bluelml/core,michaelletzgus/nextcloud-server,michaelletzgus/nextcloud-server,IljaN/core,cernbox/core,endsguy/server,endsguy/server,xx621998xx/server,bluelml/core,jbicha/server,endsguy/server,pixelipo/server,cernbox/core,pixelipo/server,pixelipo/server,xx621998xx/server,Ardinis/server,jbicha/server,lrytz/core,whitekiba/server