filters are now actually applied separately for each user

schema/ttrss_schema_mysql.sql

@@ -77,6 +77,8 @@ insert into ttrss_filter_types (id,name,description) values (1, 'title', 'Title'
 insert into ttrss_filter_types (id,name,description) values (2, 'content', 'Content');
 insert into ttrss_filter_types (id,name,description) values (3, 'both', 
 	'Title or Content');
+insert into ttrss_filter_types (id,name,description) values (4, 'link', 
+	'Link');
 
 create table ttrss_filters (id integer not null primary key auto_increment,
 	owner_uid integer not null,