Rework the way log data is saved

[Sejsel]

It has to be possible to provide an option to parse predefined logs when updating (e.g. when a success detection is fixed). We also want to make it possible to change languages of log names in dynamically (currently the name is saved).

• Store a version of the log data format
• Version of the manager as of parsing time needs to be saved for each log.
• Store the Encounter and not the name for each log
• I am currently forgetting something important

It would be nice to add support for storing optional extra data (calculated at the cost of processing time), or at the very least, make it simple to import saved data to allow that in the future (it might be already).

[Sejsel]

Implemented in 02f1e05...9967df7.