Bug 1063473 - Make grunt build clean up the .tmp directory
Bug 1063473 - Make grunt build clean up the .tmp directory

grunt-usemin uses .tmp/ as a staging area, however doesn't clean up
after itself. As such, let's run an additional grunt-clean step at the
end of the build, which removes this temporary staging directory.

tojonmz/treeherder,avih/treeherder,adusca/treeherder,jgraham/treeherder,edmorley/treeherder,kapy2010/treeherder,moijes12/treeherder,wlach/treeherder,glenn124f/treeherder,moijes12/treeherder,glenn124f/treeherder,kapy2010/treeherder,avih/treeherder,vaishalitekale/treeherder,akhileshpillai/treeherder,adusca/treeherder,parkouss/treeherder,moijes12/treeherder,rail/treeherder,sylvestre/treeherder,glenn124f/treeherder,tojon/treeherder,edmorley/treeherder,edmorley/treeherder,parkouss/treeherder,sylvestre/treeherder,tojonmz/treeherder,jgraham/treeherder,deathping1994/treeherder,wlach/treeherder,adusca/treeherder,vaishalitekale/treeherder,jgraham/treeherder,tojon/treeherder,sylvestre/treeherder,akhileshpillai/treeherder,vaishalitekale/treeherder,edmorley/treeherder,moijes12/treeherder,gbrmachado/treeherder,kapy2010/treeherder,kapy2010/treeherder,avih/treeherder,gbrmachado/treeherder,rail/treeherder,vaishalitekale/treeherder,parkouss/treeherder,rail/treeherder,akhileshpillai/treeherder,parkouss/treeherder,parkouss/treeherder,avih/treeherder,vaishalitekale/treeherder,wlach/treeherder,gbrmachado/treeherder,jgraham/treeherder,jgraham/treeherder,adusca/treeherder,gbrmachado/treeherder,avih/treeherder,adusca/treeherder,jgraham/treeherder,KWierso/treeherder,deathping1994/treeherder,deathping1994/treeherder,wlach/treeherder,sylvestre/treeherder,glenn124f/treeherder,avih/treeherder,deathping1994/treeherder,deathping1994/treeherder,akhileshpillai/treeherder,KWierso/treeherder,tojonmz/treeherder,KWierso/treeherder,adusca/treeherder,glenn124f/treeherder,gbrmachado/treeherder,sylvestre/treeherder,moijes12/treeherder,moijes12/treeherder,rail/treeherder,parkouss/treeherder,glenn124f/treeherder,tojonmz/treeherder,sylvestre/treeherder,akhileshpillai/treeherder,tojonmz/treeherder,rail/treeherder,deathping1994/treeherder,wlach/treeherder,akhileshpillai/treeherder,vaishalitekale/treeherder,tojon/treeherder,wlach/treeherder,gbrmachado/treeherder,tojonmz/treeherder,KWierso/treeherder,rail/treeherder,kapy2010/treeherder,tojon/treeherder