Run Selenium tests on SQLite

This in memory backend is faster than MySQL.

.travis.yml

@@ -40,7 +40,7 @@ before_script:
   - cp weblate/settings_example.py weblate/settings.py
   - mysql -e 'create database weblate;'
   - psql -c 'create database weblate;' -U postgres
-  - if echo $DATABASE-$DJANGO_VERSION | grep -q mysql-1.5 ; then export TEST_SELENIUM=1 ; curl https://gist.github.com/santiycr/5139565/raw/sauce_connect_setup.sh | bash ; fi
+  - if echo $DATABASE-$DJANGO_VERSION | grep -q sqlite-1.5 ; then export TEST_SELENIUM=1 ; curl https://gist.github.com/santiycr/5139565/raw/sauce_connect_setup.sh | bash ; fi
 # commands to run tests
 script: 
   - ./scripts/generate-locales