Moved the SQL Alchemy config from staging to all environments

During database upgrades and database fail overs there has been errors
because the database connection stays open, when a query is run the
query fails and the connection is re-established. To avoid these errors
shorter timeouts have been used to keep the connections from getting
stale.

-  SQLALCHEMY_POOL_TIMEOUT timeout idle connections after 30 secs
- Updated SQLALCHEMY_POOL_RECYCLE to recycle the connection every 5 mins

See guide on optimistic disconnect handling - using the pool recycle
as a way to manage this:
http://docs.sqlalchemy.org/en/latest/core/pooling.html#disconnect-handling-optimistic

app/config.py

@@ -121,6 +121,8 @@ class Config(object):
     SQLALCHEMY_COMMIT_ON_TEARDOWN = False
     SQLALCHEMY_RECORD_QUERIES = True
     SQLALCHEMY_TRACK_MODIFICATIONS = True
+    SQLALCHEMY_POOL_TIMEOUT = 30
+    SQLALCHEMY_POOL_RECYCLE = 300
     PAGE_SIZE = 50
     API_PAGE_SIZE = 250
     SMS_CHAR_COUNT_LIMIT = 495
@@ -418,8 +420,6 @@ class Staging(Config):
     API_RATE_LIMIT_ENABLED = True
     CHECK_PROXY_HEADER = True
     REDIS_ENABLED = True
-    SQLALCHEMY_POOL_TIMEOUT = 30
-    SQLALCHEMY_POOL_RECYCLE = 300
 
     API_KEY_LIMITS = {
         KEY_TYPE_TEAM: {