fix(ticksTooltip): Fix the positioning bug on Firefox due to tooltip on flex element.
fix(ticksTooltip): Fix the positioning bug on Firefox due to tooltip on flex element.

Fixed by adding the tooltip-append-to-body config element to enforce the tooltip to be added to the
body.

Discussed in #209

denisos/angularjs-slider,angular-slider/angularjs-slider,andreytkachenko/angularjs-slider,denisos/angularjs-slider,TimmyParkwayd/angularjs-slider-touch,kddc/angularjs-slider,kddc/angularjs-slider,rzajac/angularjs-slider,rzajac/angularjs-slider,angular-slider/angularjs-slider,andreytkachenko/angularjs-slider,TimmyParkwayd/angularjs-slider-touch