Better database layout with uuid primary keys

Serialize and deserialize the uuid ids as base62 strings in the URLs.

drop_all.sql

@@ -0,0 +1,9 @@
+/* !!! THIS DROPS ALL TABLES IN THE DATABASE WHICH DELETES ALL DATA IN THE DATABASE !!!
+ *
+ * ONLY RUN IN DEVELOPMENT!
+ */
+drop table _sqlx_migrations cascade;
+drop collation case_insensitive;
+drop table entry cascade;
+drop table feed cascade;
+drop type feed_type;