Make Configuration object return boolean values

[ocelotl]

Many times, configuration values are just boolean values. The Configuration object now only returns the literal configuration value. It would be useful to have this object return True instead of "True" to keep code a bit shorter
We could have this:

if Configuration().SOME_CONFIGURATION:
    ...

Instead of this:

if Configuration().SOME_CONFIGURATION == "True":
    ...

[mauriciovasquezbernal]

What about integer types as well?