Temporary save

Signed-off-by: Chun Chen <chun.chen@archermind.com>
Add fake grid line by new joined x-axis

Signed-off-by: Chun Chen <chun.chen@archermind.com>
Revert "Add fake grid line by new joined x-axis"

This reverts commit 7896db9b9e2f89508928ef4ff7b9f136e53b5f64.
Draw at-most three lines in one procrank chart

Signed-off-by: Chun Chen <chun.chen@archermind.com>
Several modifications on charts

1. Specify meminfo #1 and #2 range and unit according to some rules
2. If there is over range line, draw it in a new chart
3. Specify procrank's range and unit according to some rules
4. Change average / peak table unit to '%0.1f MB'

Signed-off-by: Chun Chen <chun.chen@archermind.com>