Revert "Update dev settings to use memcached pool backend."

This reverts commit ac828c771d5b5e7af00e85c203479153c0c7427d.
Robustify apps_trending cron (bug 922182)
Merge pull request #1233 from robhudson/922182-trending

Robustify apps_trending cron (bug 922182)
Updated stats API to emit 503 when Monolith down (bug 924439)
optimize nullbooleanfields for mobile (bug 917439)
Merge pull request #1149 from ngokevin/revsearchmobile

optimize nullbooleanfields for mobile (bug 917439)
yes > varies (bug 909801-three)
Merge pull request #1238 from andymckay/909801-three

yes > varies (bug 909801-three)
Removed d2c waffle flags (bug 823702)
exclude disabled versions in app queue sort, remove old sort code (bug 890177)
add 3rd party keyboard support to buchets (bug 922209)
Merge pull request #1240 from ngokevin/appfeats

add 3rd party keyboard support to buchets (bug 922209)
Merge pull request #1219 from ngokevin/queuesort

exclude disabled versions in app queue sort, remove old sort code (bug 890177)
make a testing tab (bug 923307)
Merge pull request #1222 from andymckay/923307

make a testing tab (bug 923307)
add new region (bug 916298)
CEF log not ok results (bug 925171)
Merge pull request #1241 from andymckay/925171

CEF log not ok results (bug 925171)
fix 404 favicons (bug 925162)
fix reviewer tests by adding back webapp sort