* fixed load_drl to accept unsetted QComboBox
* simplified update_profile function

also improved readme - now has a better installation guide

* 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

*Adds line when last line of table is edited

* drltools heavily rewritten to less spaghetti-like code
* reduced number of calls produced by the user
* minimized call impact only the logical one
* TODO: make daughter ion-table generation less demanding

* improved layout, fixed naming
* connected functions to value changes inside the table

* hopefully did not forget about any instance - we will see..

* Add line now adds line with (Vals+1) compared to upper line

* solves the annoying default button Qt5 feature

* better input sanitization will be needed someday in future

* improved code readability