Merge pull request #1 from Azmisov/master

Merge staging with master
removed neighbor table's primary keys
Added test code for the Surrogate Neighbor methods
get/removeSurrNeigh... methods return the value of sqlUpdate
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
finished get/setColumn methods
added node attributes testing code
implemented addNode(Node);
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
fixed clearDB sql
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
added part of new Node test
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
fix test cases functionality
finished addNode test
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
fixed addNode test
fix john's sql statements
Merge branch 'staging' of https://github.com/Azmisov/cs340-5horsemen.git into staging
added testAddNode1 to main