Always use label as tooltip for header icons
Always use label as tooltip for header icons

Closes #496.

Onyx47/core,billmn/core,Luceos/core,kidaa/core,malayladu/core,kidaa/core,datitisev/core,Albert221/core,billmn/core,falconchen/core,zaksoup/core,malayladu/core,malayladu/core,malayladu/core,Luceos/core,Albert221/core,falconchen/core,datitisev/core,falconchen/core,vuthaihoc/core,kirkbushell/core,Onyx47/core,kirkbushell/core,renyuneyun/core,Onyx47/core,kidaa/core,billmn/core,renyuneyun/core,flarum/core,Albert221/core,datitisev/core,Albert221/core,kirkbushell/core,dungphanxuan/core,zaksoup/core,dungphanxuan/core,Luceos/core,vuthaihoc/core,flarum/core,renyuneyun/core,datitisev/core,vuthaihoc/core,zaksoup/core,kirkbushell/core,Luceos/core,dungphanxuan/core,flarum/core,renyuneyun/core