This change adds satellite endpoint for receiving OrderLimits sent by storage node.
Change includes:
* wire up orders sender in storage node (also in testplanet)
* saving serial number for OrderLimit in serial_numbers table
* satellite endpoint for receiving, verifying and storing OrderLimit and Order serial number
* initial implementation for Orders DB
* basic test for sending orders to satellite
* Add Application Name to PostgreSQL Connection String,
if not existing already
* Relocate Check
* Handle Application Name only for Postgres
* URL Encode
* Relocate Function into pgutil
* Fix Error, when ApplicationName is set
* Rename parameter
* Rename Check Value
* Straightline Comment
* Remove fmt Dependency
* Fix Linting Recommendation
* intial changes to migrate statdb to masterdb framework
* statdb refactor compiles
* added TestCreateDoesNotExist testcase
* Initial port of statdb to masterdb framework working
* refactored statdb proto def to pkg/statdb
* removed statdb/proto folder
* moved pb.Node to storj.NodeID
* CreateEntryIfNotExistsRequest moved pd.Node to storj.NodeID
* moved the fields from pb.Node to statdb.UpdateRequest
ported TestUpdateExists, TestUpdateUptimeExists, TestUpdateAuditSuccessExists TestUpdateBatchExists
* Merge bwagreement db into satellite master db
* adjust to recent tally changes
* linter problems
* linter problems
* returning db structs in more optimal way
* added pointer for assignment
* error message changed
* better param message
