Fixes #1074 - Added clear filter event to LabelSearch method to trigg…

[deepthivenkat]

…er URL change

r? @miketaylr

[miketaylr]

Yay! So the fix was pretty simple.

In the future, when you make a PR, can you explain the patch a little bit? That helps the reviewer to get up to speed quicker.

For this bug, something like "This patch triggers filter:clear in labelSearch (which ends up triggering filter:reset-stage which ends up calling updateModelParams (which calls updateURLParams -- which is what we want). It has the side effect of clearing filters in a search, which is a required constraint of our set up right now."

@deepthivenkat do you intend to write an intern test for this?

[miketaylr]

@deepthivenkat do you intend to write an intern test for this?

Deepthi filed #1079 to track that.

[miketaylr]

Also, thanks for the patch and bug fix! 🎈