doc
credit_factor logic reworked
initialization of $debug_level
sql_references: ignore by entry primary key;
garbage collection for system tables: give maxage in seconds
initialization of $debug_level
references_view
acces rules for references
allow more primary keys in url
references_view / more primary keys in url
new table: rooms
fix csv deliverable name in teachinglist_view; new: publications_view
link to references in person_view