Add functionality to change rr_length and max-mailboxes
Created by: jorana
fix issue https://github.com/XENONnT/straxen/issues/58
In some run modes (such as LED runs) one might want to have other lengths of raw records than the 110 set as default by strax (https://github.com/AxFoundation/strax/blob/master/strax/dtypes.py#L13).
Hence, we need to read this from the runs database where it was set for redax. It was tested on runs 7010 and 7011 on eb1.
Additionally there are some minor features in bootstrax that are also added in this PR. (My appologies for all the automatic pycharm edits that are all over the place.)
The version number is something that will be removed soon when the testing is finished.