typo: trailing spaces
Merge branch 'bugfixes'

Conflicts:
	sources/pyperfstore2/pyperfstore2/manager.py
fix: undefined date in cgrid_state
timestamp properly displayed again
avoid undefined values on renderer
fixed date renderer behavior for all calls
fix 1970 date in minichart
fix spark line redraw
fix, check timestamp value in cspark redraw
french date translations in renderer
removed useless comment
minichart refresh partial resolution -> missing live reporting case