adding mimetype for .webapp, Mozilla's new app manifest type. more:
adding mimetype for .webapp, Mozilla's new app manifest type. more:

This content-type is neccessary apparently:
  https://developer.mozilla.org/en/Apps/The_Manifest

Gillespie59/server-configs-apache,Gillespie59/server-configs-apache,sengkoil/server-configs-apache,atyenoria/server-configs-apache,blackmoral/server-configs-apache,atyenoria/server-configs-apache,voku/server-configs-apache,StephanieMak/server-configs-apache,johnnyicarus/server-configs-apache,walterebert/server-configs-apache,voku/server-configs-apache,johnnyicarus/server-configs-apache,blackmoral/server-configs-apache,walterebert/server-configs-apache,h5bp/server-configs-apache,StephanieMak/server-configs-apache,sengkoil/server-configs-apache