Fixed json url and timeout errors
Cleaned and fixed HttpPostHandler
Merge pull request #30 from TeamWhat/url-change

Url change
Add a charting library
Implement file size pie chart
Adjust size chart
Add chart library licence information
Make chart to calculate ratios correctly
Add file count chart
Merge pull request #32 from TeamWhat/charts

Charts
Basic bacground collection started and working
Add datasending interval from preferences
Add connectionChangeReceiver
Add ConnectivityChangeReceiver
Start intentToStop null fix
Add connection checks to Connectivity class
Add connection checks to Connectivity class