add link to manual dispatch
tweak highlight and see also colors
mod_development: added template lookup tool to check the template selection.
Optionally add a resource castegory.
Shows the selected template per user-agent class.
admin: open editor image dialog with depiction tab
admin: improve display of image options in editor

make image retina ready; group choices in dialog
document restart command
core: fix stored procedure 'medium_update' for psql 8.x
mod_development: fix problem where the dispatch-debugging interfered with ssl connection redirects.
core: make the checksum assert more robust against illegal input.
mod_filestore: fix problem with urls ending in a '/'