Created DB* classes
Added DBReader-methods
Adding audio variable speed playback support at the service level
Updating formatting to match remote
Merge branch 'speed' into develop
Added methods for controlling playback speed to playback controller
Added buttons to control playback speed
Added presto dependency to pom.xml
Added variable speed playback control as a global option.
Implemented DBWriter-methods
Bug fix for trying to set pitch when media is null.
Merge pull request #186 from TheRealFalcon/playback-speed

Bug fix for trying to set speed/pitch when media is null.
Merge branch 'playback-speed' into speed

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml
	src/de/danoeh/antennapod/activity/PreferenceActivity.java
	src/de/danoeh/antennapod/service/PlaybackService.java
Variable speed playback as user preferences and customization of playback speed.
Merge branch 'speed' into playback-speed
Reduce default speeds to every .1 instead of every .05 so user doesn't have to do a lot of unchecking.  Also, be consistant about where float or double is used and be consistent about which context is used for UserPreferences.
Add missing resources in string.xml
Build media file name based on item title

Use the media item title as a filename base if exist, fallback on the url name
otherwise.
Implemented several DBTasks and DBWriter methods
Split DownloadStatus into two separate classes

DownloadStatus is now used only for finished downloads, whereas
DownloadRequest is used for running/unfinished downloads