Bug 1198978 - Fix keyboard input after job classification
Bug 1198978 - Fix keyboard input after job classification

For some reason changing the span to a button broke keyboard input
after job classification on Firefox on Linux/Windows (not Mac,
any flavor of Chrome also works fine). Blurring the input element
seems to fix this.

kapy2010/treeherder,tojonmz/treeherder,tojon/treeherder,wlach/treeherder,tojonmz/treeherder,KWierso/treeherder,tojonmz/treeherder,akhileshpillai/treeherder,tojon/treeherder,edmorley/treeherder,glenn124f/treeherder,kapy2010/treeherder,wlach/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,tojon/treeherder,KWierso/treeherder,akhileshpillai/treeherder,edmorley/treeherder,edmorley/treeherder,glenn124f/treeherder,glenn124f/treeherder,kapy2010/treeherder,KWierso/treeherder,kapy2010/treeherder,wlach/treeherder,akhileshpillai/treeherder,wlach/treeherder,glenn124f/treeherder,wlach/treeherder,KWierso/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder,edmorley/treeherder,glenn124f/treeherder,glenn124f/treeherder,tojonmz/treeherder,wlach/treeherder,kapy2010/treeherder