Bug 1164898 - A few more fixups to display of confidence warning
Bug 1164898 - A few more fixups to display of confidence warning

* Don't display it if we don't have any runs at all for either original or new
* Some capitalization tweaks

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