Calendar and photos can be hidden by disabling surgeplus using the surgemail.ini setting:

 g_disable_surgeplus "TRUE"

or by using user_access settings

!surgeplus

Display filestore as well as / instead of photos button in application menu: In extend.css add the relevant style definitions below:

 #app_filestore{

 	display:block;

 }

 #app_photos{

 	display:none;

 }