server, ics: add a facility to filter courses by groups

When fetching courses based on their module ID, it is interesting to
exclude coruses that do not apply to some groups.  This adds the
functionnality to apply that filtering, with the Ics.filter_groups
function.

It also becomes possible to get ICS for modules.  URLs and generators
are changed accordingly.

Signed-off-by: Alban Gruin <alban at pa1ch dot fr>

0 files changed, 0 insertions, 0 deletions