fixed Mysql fallback for PathFinder::Sphinx::Query:
* ThinkingSphinx 2 raises Riddle::ConnectionError (not sure if ThinkingSphinx::ConnectionError may also be raised in some cases, so catching both)
* PathFinder::Mysql::Builder is called PathFinder::Mysql::Query now
use Sphinx to search through me/pages
save WikiPage after updating Wiki, to cause PageTerms to be updated
fixed PageTrackingObserverTest (was broken due to changes to Wiki model)
.travis.yml: removed silencing of apt-{get,cache} output - travis-ci seems to be able to fold those correctly now
Use pure sql to migrate poll and vote types
fixing rate_many_page to be html_safe
Merge pull request #53 from Crabgrass/feature/4189-fix-sphinx-search

fix sphinx search
Merge remote-tracking branch 'crabgrass/develop' into develop