Online-QA module for STS raw digis
The module is represented with the class cbm::algo::sts::DigiQa (file StsDigiQa.h). On this iteration the following distributions are added: digi vs. channel vs. address, digi vs. charge vs. address, and digi vs. channel vs. charge vs. address.
Modification to histogram server:
- bugfix: the histogram server does not crash any more, if the canvas has more pads, then the corresponding canvas config
- possibility to save canvases into subdirectories was added
NOTE: this merge request should be merged after the !1689 (merged)