Resolves partly issue #43.

Stages are no more hardcoded. There is default json file,
which is parsed to the database. The database is updated
periodically (like other tables) from the server side.
Removed redundant StageType.
Oops.. almost saved wrong Stage values to db.
Removed wrong log message.
Fixed comments given to PR.
Remove commented out code in FestAppMainActivity.java
Fixed StageDAO server queries to really work.
Added sampling for the map image. Sampling size is set with the SAMPLING_SIZE constant in MapActivity.java. This value has to be set on per image basis and cannot really be dynamically calculated.
Merge branch 'master' of https://github.com/futurice/festapp-android into map_oom_fix
Refactored the way repeating service timer is created. This fixed the duplicating services issue.
Merge branch 'master' of https://github.com/futurice/festapp-android into duplicate_fetch
Cleaned up some mess.
Merge branch 'master' of https://github.com/futurice/festapp-android into map_oom_fix
Appended base url to GET and POST request
Merge pull request #74 from dwarfcrank/remove-commented-out-code-festappmainactivity

Remove commented out code in FestAppMainActivity.java
Merged upstream.
Merge branch 'master' of https://github.com/futurice/festapp-android into map_oom_fix
Merge branch 'master' of https://github.com/futurice/festapp-android into map_oom_fix
Merge branch 'master' of https://github.com/futurice/festapp-android into duplicate_fetch
Merge pull request #82 from robotti3/Issue79

Appended base url to GET and POST request