Merge pull request #28 from Danielhe280/master

Spinner for charging types is using actual values for display to the user currently.
Merge pull request #29 from Danielhe280/master

Fix the  spinner in CreateEntriesActivity so it displays charging types.
Creates new TimeEntries remotely on the API, uses the response to create it locally.
Was hard to test the reliability of the feature because of unreliable wifi-connection.
But it did at least work 3 times in a row immediately.