Add only wifi sending preference, add connectivity class
Rebase
Small connectivity refactor for travis
Merge pull request #31 from TeamWhat/wifis

Wifis
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