Continuing work on the API.

The id_counter module now includes the record directly in the source.
Fixed many typos and small syntax errors.
Added ts_api:dispatch_user/2 to handle different HTTP methods.
Added method placeholder stubs to ts_api.
Implemented ts_api:list_entries/3.
Added ts_user record and ts_user module.
Implemented ts_entry:list/4, the more generic guts of the other list functions.
Created ts_entry:list_asc/3 and ts_entry:list_desc/3.
Fixed ts_json:encode_datetime/1.

src/ts_db_records.hrl

@@ -1,3 +1,12 @@
+-record(ts_user, {
+    username,
+    pwd,
+    pwd_salt,
+    name,
+    email,
+    join_date
+}).
+
 -record(ts_timeline, {
     ref,    % {username, timelineid}
     created,% {{year, month, day}, {hour, minute, second}}