increase download count on item download
include download count in item description
update MySQL table
add a MySQL table for keeping ratings
implement basic rating
add new DB for item types
change type attribute to integer
reflect variable item types in schema
add a small class for managing item types
adjust code to the new type system
add method listing supported item types
fix small syntax error
Merge branch 'item-types' - allow variable item types
simplify .htaccess files
undo accidental deletion of types method in 922a6e18e
include item rating in description
allow filtering for item rating

Support exact, min and max rating filters where
the last two can be combined, but the first has
precedence. Some fixes to existing code were re-
quired due to SQL changes.
implement item rating configuration
change URL and file name
item ratings: allow individual retrieval

Make it possible to retrieve a list indicating how
the individual users rated the item.