Grafana dashboards from atop

Upload atop logs and generate Grafana dashboards automatically.

New Processes dashboard — per-process tables for CPU, memory and disk, with thread counts and a drill-down into individual threads
Load average graph on the CPU dashboard
Upload no longer jumps to Grafana while files are still parsing — you get parse progress per metric type, totals per file, and an Open Grafana button once everything is done
Choose what to parse right on the upload page — parsing fewer types is much faster. Previously this worked only for curl uploads
Look up parse statistics of an earlier upload by its file name
Fixed process command lines containing nested brackets shifting the parsed fields
Hardened input validation on the upload and parse endpoints

Added support for parse_type parameter in upload API - ?parse_types=CPL,CPU,MEM