Refactor the Python based test suite

This is a squashed commit of the following from parallel-wget:
ecd6977 Refactor mainly the test cases classes
d26c8eb Create package test for test case classes
507383d Move server classes to package server.protocol
195393b Create package conf where rules and hooks are put
42e482a Create package exc and move TestFailed to exc
82f44f3 Fix a typo in Test-Proto.py
31e5f33 From WgetTest.py move WgetFile to misc
422171d Create package misc, move ColourTerm.py to misc

testenv/Test-auth-basic.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 from sys import exit
-from WgetTest import HTTPTest, WgetFile
+from test.http_test import HTTPTest
+from misc.wget_file import WgetFile
 
 """
     This test ensures Wget's Basic Authorization Negotiation.