Added date to 0.7.0 release.

Added 0.6.0 release date.

Deleting an alarm now clears all notifications tied to it. Fixes an app

crash.

Added exchanges BTC100 and BtcTrade.

Modified ExchangeListPreference on AlarmCreation to select OKCoin as default.

Removed unecessary language verification before creating a notification.

Removed unecessary condition from silent detection.

Updated ReleaseNotes.

Added missing modifications to ReleaseNotes.

fdroid checkupdates is working. Reverting version numbers.