ENH: foamMonitor: modernise and refactor the script (fixes #2104)

- enhance POSIX compliance
- apply distinct colours and dash type for each line
- standardize the frame size to 1200x627
- dynamically replace the title with <function-object-name>/<file-name>
- address underscore character issues
- introduce legend components for tensors
- resolve a bug caused by parentheses in tensor files

BUG: particleTrackProperties: correct the typo (fixes #3050)