* About dialog now shows version for easy-check
* Minor fix of DRL export formatting (name without space)
* Set version to 0.0.2 (will now increment on any bigger update)

* loading of the incompatible file will not crush whole program
* moved to GridSpec layout - constrained layout preparation

* amount of "correct to" columns can be changed now in a software itself
* fix for deletion of multiple rows - now the SW survives
* time shift is now noted in the exported file (has been done in
previous commit, forget to note it)

* input checking when loading DRL configfile improved

* modified drl dataset layout to dict
* added time shift - modifies also the exported data

* tmp folder now can be set in GUI, so rawprasslib functionality of
reading of the spectra during acquisition is implemented
* file is reloaded and the figures are refreshed upon F5

* solves the annoying default button Qt5 feature

* better input sanitization will be needed someday in future

* Undecided where to keep pushbuttons
* Added verification that mass does not end-up empty

* still preliminary - code is messy there

created function for construction of the tables.