mdTooltip is broken in Firefox when checking 'pointer-events' to not be 'none'

[alirezamirian]

@ThomasBurleson :
In this commit you've added a an if statement which checks pointer-events of the md-tooltip itself to not be none! First of all I don't understand why, and secondly
it's not gonna work for obvious reason! In the styles pointer-events is set to none for md-tooltip!
However the computedStyle for pointer-events is not none in chrome for some reason!

[jakubweber]

+1

[bbruenings]

+1

[evertonrobertoauler]

+1

[djfishe]

+1

[ricardobfa]

+1

[krunalsheth3]

@Splaktar This brings another problem.
I added a css property to one of the parent div tags
pointer-events : none
This results in showing up every tooltip present in its child elements
Is there a work around for that ?