PS3GameUpdateDownloader v011

! important change
+ new feature or minor change
- bugfix

v011:
-  fix crash when proxy is enabled but no proper proxy settings are set
-  fix typo in download speed display
+  moved proxy user to keyring
-  fixed proxy support not being installed from requirements.txt
-  added two japanese psn titleid to titledb
+  added updater for titledb
+  added download verification to auto updater
-  prevent crashes with corrupted config files
+  changed storage treshold from percentage to absolute