Add local_group.sql with DB changes to user_group, setup and populate local_group.

DB/local_group.sql

@@ -0,0 +1,17 @@
+alter table user_group
+    add uri varchar(255) unique key comment 'universal identifier',
+    add mainpage varchar(255) comment 'page for group info to link to',
+    drop index nickname;
+
+create table local_group (
+
+   group_id integer primary key comment 'group represented' references user_group (id),
+   nickname varchar(64) unique key comment 'group represented',
+
+   created datetime not null comment 'date this record was created',
+   modified timestamp comment 'date this record was modified'
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+insert into local_group (group_id, nickname, created, modified)
+    select id, nickname, created, modified from user_group;