I've installed gtg by adding ppa to repository. When I run gtg from terminal some features go idle. How can I active these features?
2013-05-05 17:27:15,934 - WARNING - __init__:__init__:77 - Backend backend_twitter could not be loaded: No module named tweepy.models
2013-05-05 17:27:15,937 - WARNING - __init__:__init__:77 - Backend backend_rtm could not be loaded: No module named dateutil.tz
2013-05-05 17:27:15,991 - WARNING - __init__:__init__:77 - Backend backend_evolution could not be loaded: No module named evolution
2013-05-05 17:27:15,991 - WARNING - __init__:__init__:77 - Backend backend_mantis could not be loaded: No module named suds.client
2013-05-05 17:27:15,992 - WARNING - __init__:__init__:77 - Backend backend_launchpad could not be loaded: No module named launchpadlib.launchpad