Bug 1016305 - Updated Selenium IDE to 2.7.0 and fix logged messages. r=amatei, r=hskupin

--HG--
branch : mozilla-beta
extra : transplant_source : %84%1D%9D%95%19N_%C2%17%FC%E9%1B%60%B8T%3B%ED%8Cj%E3