Feat: path and names (!208) · Merge requests · calibration / pycalibration

@ahmedk This MR introduce several features connected to each other

Dark processing notebooks stores calibration constant locally (if requested)
server overview is able to show HTML pages and pictures
Name of report for dark and correction notebooks is formed as Dark/Correct_Detector_Time of start
Output folder is not overwritten by the notebooks. This helps with more clear formatting of the output folder by webservice
xfel.pdf file is not copied to the output folder

Feat: path and names