Merge pull request #2 from condutor/master

Fix label out of canvas on donutchart.js
Fetch d3.js from a cdn to make the site load faster
Fixes #3 date format in the animals model
Refactor age buckets function
Create admissions by month histogram
Change histogram.js to bargraph.js
Merge pull request #4 from condutor/d3-cdn

Fetch d3.js from a cdn to make the site load faster
Merge pull request #5 from condutor/ctime-histogram

Create a bar graph showing admissions by month
Style.css - file style review

Review of comments and indentation
Added logo image on the top header
Dashboard look review
Fix donutshart for multi-browser display
Fix some classes names on style.css

fix wrong names due to a find+replace poorly executed
Fix animal details window

fixes buttons position in small devices.