* Gauge: began looking at gauge title
* Gauge: title improvements
* Minor progres
* Gauge: title improvements, still needs more tweaking
* Gauge: title is starting to work ok
* Use selectThemeVariant
* Remove unused type
Fixes#5515. Flot gauge has its own threshold check that is different
from the threshold check in singlestat. This changes the flot check to
be exclusive (same as the singlestat check). E.g. if the threshold is
10, then the value 10 is over the threshold.