fix bug 877679 - Final touches to launch 0.1 of search navigator
Make sure we use ES 0.20.5 and not the latest version (1.1.0).
Stop using python2.6-dev.
Merge pull request #2353 from jezdez/downgrade-elasticsearch

Make sure we use ES 0.20.5 and not the latest version (1.1.0).
Merge pull request #2348 from darkwing/877679-killer

fix bug 877679 - Final touches to launch 0.1 of search navigator