Beginning of Chart
Postgree now is on Development as well
Creating graphs's struct
Signed-of-by: Thaiane Braga <thaiane.unb@hotmail.com>
Signed-of-by: Maxwell Almeida <llewxam100@hotmail.com>
 creating graph filter method on graph controller and Refactoring graph structure
 generating chart without filter
Updating database.yml 

Changing adapter from postgresql to sqlite3
 refactoring filter_atendimentos method
Building the filter mecanism to graph creation, and fixing redirecting bug.
fixing subtitles
Fixing pie chart
Graph's tests
Automatic cleaning of the data graphs and tests's graphs
Merge branch 'architecture' into charts
Merge into architecture