Remove magma_ prefix from gradle script

Signed-off-by: Steven Downer <grinch@outlook.com>
Re-add project repositories

Signed-off-by: Steven Downer <grinch@outlook.com>
Remove invalid artifact

Signed-off-by: Steven Downer <grinch@outlook.com>
Archive deobfuscated version of Magma instead of obfuscated one

Signed-off-by: Steven Downer <grinch@outlook.com>
Remove unneeded task

Signed-off-by: Steven Downer <grinch@outlook.com>
Update build.gradle

- Update to license-gradle-plugin 0.9.0
- Update to coveralls-gradle-plugin 0.5.0
- Include magma.gradle script to allow offline compilation and not depend on the status of obsidianbox.org

Signed-off-by: Steven Downer <grinch@outlook.com>