fix for StorageList and tests added

gluon/storage.py
StorageList had a recursion error (please check the implementation before committing)

gluon/tests*
added the fix_path module to avoid those ugly lines at the beginning of each test file
added tests for gluon.contenttype and test_fileutils
added tests for missing Storage methods

gluon/tests/test_fileutils.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import unittest
+import datetime
+from fix_path import fix_sys_path
+
+fix_sys_path(__file__)
+
+from fileutils import parse_version
+
+
+class TestFileUtils(unittest.TestCase):
+
+    def testParseVersion(self):
+        rtn = parse_version('Version 1.99.0-rc.1+timestamp.2011.09.19.08.23.26')
+        self.assertEqual(rtn, (1, 99, 0, 'rc.1', datetime.datetime(2011, 9, 19, 8, 23, 26)))
+        rtn = parse_version('Version 2.9.11-stable+timestamp.2014.09.15.18.31.17')
+        self.assertEqual(rtn, (2, 9, 11, 'stable', datetime.datetime(2014, 9, 15, 18, 31, 17)))
+        rtn = parse_version('Version 1.99.0 (2011-09-19 08:23:26)')
+        self.assertEqual(rtn, (1, 99, 0, 'dev', datetime.datetime(2011, 9, 19, 8, 23, 26)))
+
+
+if __name__ == '__main__':
+    unittest.main()