Test for slave lag when determining runnable notifications.
Initial support for new prioritizing/queue isolation mechanism for materializations.
Remove grants for insert,delete and update permissions
Add functions for retrieving list of missing columns for materialization target trendstores.
Merge branch 'develop' of hitc14:Minerva/python/minerva-etl into develop
Check on replication slave lag
Use missing_columns function to add missing trends and return number of added trends.
Replace sum_array functions with one anyarray function.
Merge branch 'develop' into release/4.5