Merge pull request #1 from aleishaa/master

Edited the text on the website so it makes more sense.
Merge pull request #2 from aleishaa/master

Detects language preferences of the browser and formats numbers appropri...
Merge pull request #3 from aleishaa/master

Added Number() function to the Javascript to convert all values to integ...
Changed title of webpage (from Hea::App) so it is more descriptive.
Changed titles of charts to be more appropriate
Refined ranges for some of the charts so they provide more useful information
Merge branch 'master' of https://github.com/biblibre/hea-app
Refined ranges for some charts so they give more useful information
Merge branch 'master' of github.com:aleishaa/hea-app