#4245 Generelle Sortierreihenfolge: systeme: alphabetisch, systemmessage: gültig_von
#4272 IE don't shows placeholder, now using label for every input-field
#4240 no more "ugly padding on systemmessages-list", active navbar for message, active is bold
Merge remote-tracking branch 'origin/master' into #4272-bec-IE-no-placeholders-shown

Conflicts:
	src/pages/admin/systemMessages/systemMessages-form.html
	src/pages/directiveTemplates/system/system-messages-list.html
Merge pull request #5 from alv-ch/#4272-bec-IE-no-placeholders-shown

ref #4245 Generelle Sortierreihenfolge: systeme: alphabetisch, systemmessage...