Improved logging ui.
Reformatted code and improved finalising of data.
Updated Activity detail view for spitted tracks.
Reformatted code and improved detail ui.
Updated Core Data model to prepare activity types.

!!!Please export data before and import later. No automatic migration possible. !!!
Fixed export/import bug for tracks with pause.
Merge pull request #9 from webventil/logging-ui

Added support for pausing and resuming activity. Improved UI and localisation. Improved import and export.