Ensure scripts can be built without local settings file

From joequant
https://github.com/joequant/OG-Tools/commit/3c9ed93f53fb03f3bb31d784eeffb3423c58576f
Release v1.4.0
Ensure plugin can be built without local settings file

From joequant
https://github.com/joequant/OG-Tools/commit/3c9ed93f53fb03f3bb31d784eeffb3423c58576f
Upgrade to scripts v1.4.0
Uprade to mojo-executor v2.1 for maven v3.1 support

From joequant
https://github.com/joequant/OG-Tools/commit/3c9ed93f53fb03f3bb31d784eeffb3423c58576f
Fixes #1
Release v1.4.0
Update to opengamma-maven-plugin v1.4.0
Update to maven-shade-plugin v2.2
Release corporate-parent v1.1.6