Improvements to the UX

[quiksilv]

• [ ] Data snapshots (every N minutes or M events)
• [ ] THttpServer register a reset histogram command derived from h->Reset("ICESM"); This command can be executable from the Reset Plot button on the web page.
• [x] Display current state of devices (build state machines) for RSHMP4040, TOFPET2
• [x] Display current Run number (or previous run number if acquisition not started)
• [ ] Two different methods to start/end the run: 1) with pre-determined acquisition time. 2) without
• [x] Try to filter OS contributions from python psutil plots
• [x] In addition to separate monitoringN.root files, where N is a running number determined from the snapshot interval, also include a monitoring.root file that contains everything

[quiksilv]

0c9ce2fd9b07a93ab3c894316306331b774081f9 allows for the creation of intermediate snapshot files and all data file.

[quiksilv]

35b4a94b88b939a2d5ea8cf1867e1fa56e3ca83c restricts the io monitoring to only daqd

[quiksilv]

https://github.com/SiFi-CC/slowcontrol/commit/432cd1ef6a951da90d1f744c1382fe0ba8c87d8c display previous or current run id