This makes two small changes
- renames a class to resolve two css classes having the same name
- ensures sysinfo's outermost element follows the *-view pattern
Scans the window from the most recent timestamp to however many seconds
back are being stored. Then adds blank spaces (NaN values) in between
data items that are too far apart. Lastly, if the earliest item is
blank, there are probably fewer than the expected number of items. In
that case, it adjusts the first timestamp to keep plot width mostly
consistent.
