removing code that attempted to obtain the height of a chart to calculate the maximum truncate length for x axis labels.
removing unused vars
Merge branch 'master' into fix/#2255
Merge pull request #2280 from stormpython/fix/#2255

Allow filtering on multiple visualizations in the dashboard.
[lesshat] expand arg lists to previde chrome defaults to IE
[controlGroup] get specific with the flexing so that IE can keep up
Merge pull request #2299 from spenceralger/flexbox_nav

[controlGroup] get specific with the flexing so that IE can keep up
Merge pull request #2298 from spenceralger/flex-auto

Provide all args to .flex() mixin