[Maemo Mapper] Maemo Mapper v2.3.1 Released

This release adds the ability to "compact" (aka "reorganize") a map cache database file. Due to the nature of GDBM, this is the only way a map cache database can decrease in size. (Otherwise, the space used by deleted maps is reused to store new maps.) Also in this release is a key bug fix for those who have had problems with Maemo Mapper remaining in memory even after closing it. A symptom of this is not being able to start Maemo Mapper again after closing it. If you are experiencing these symptoms, you should upgrade to v2.3.1. I also added Swedish translation strings, courtesy Daniel Nylander.