fix error when no checkboxes are checked for filters
fix error when no checkboxes are checked for filters

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