added application version to device inventory building
bumped version to 0.1.21-devel
added search field
added handling of duplicate key on insert
added limit on number of processes
fix in building device inventory
fix in building device inventory
improved expired token notification
changed funf population to 20 documents
Created new application for MySQL database access
Added connection pooling and user role support
Added connection pooling and user role support
Merge remote-tracking branch 'origin/mysql' into mysql

Conflicts:
	sensible_data_service/db_access/mysql_wrapper.py
Added connection pooling and user role support
Added connection pooling and user role support
Fixed issue where all fields were added as strings
Fixed several bugs
Fixed several bugs
Merge branch 'mysql' of https://github.com/MIT-Model-Open-Data-and-Identity-System/SensibleData-Service into mysql

Conflicts:
	sensible_data_service/db_access/mysql_wrapper.py
Added per probe authentication