Make a plugin to display statistics from enviroment
Removed EnvironmentStatisticsBlock references from Core.
EnvironmentStatisticsBlock timeout set to 60.minutes
Merge branches 'stable_colivre' and 'ActionItem2851' into ActionItem2851
Merge branch 'ActionItem2851' of github.com:SerproLivre/noosfero into ActionItem2851
Merge branch 'ActionItem2851' into stable