Redesigned API URL structure. Updated ts_api to implement this.

Implemented ts_api:list_timelines/2.
Adjusted ts_timeline:list/3 to be 0-indexed.
Changed ts_user password hash to use a random salt + SHA1
Added some skeleton testing code.

test/ts_user_tests.erl

@@ -0,0 +1,26 @@
+-module(ts_user_tests).
+%-import(ts_test_common, [assertRecordsEqual/2]).
+
+-include_lib("eunit/include/eunit.hrl").
+-include_lib("../src/ts_db_records.hrl").
+
+setup() -> ts_test_env:setup().
+
+cleanup(_Status) -> ts_api_env:cleanup(ok).
+
+% ======== TEST DATA ======== %
+
+joe_user() -> #ts_user{username=joeuser, name="Joe User", pwd="ohmy",
+   email="JoeUser@users.org",
+   join_date=calendar:now_to_datetime(erlang:now())}. 
+
+% ======== TESTS ======== %
+
+new_delete_test_() ->
+    % test data
+    JoeUser = joe_user(),
+
+    {setup, fun setup/0, fun cleanup/1, {inorder, [
+        ?_test(new(JoeUser)),
+        ?_test(lookup(JoeUser#ts_user.username, JoeUser)),
+