Finishes UPDATE sql script for upgrades from v1.4.x to v1.5.0
Sets release version to 1.5.0 and builds
Merge remote-tracking branch 'merchello/1.5.0' into 1.5.0
Merge pull request #956 from rustyswayne/1.5.0

Finishes UPDATE sql script for upgrades from v1.4.x to v1.5.0 and release prep