Organising configuration according to (one version of!) best-practice! Introduced a dependency on a module we created for making Module.php creation easier.

In addition, refactored PayumController to take dependencies via injection in the controller.config.php rather than relying on the ServiceLocator within the controller itself.
PayumController now takes dependencies through the constructor and set methods are removed. $payumRegistry variable renamed to just $payum, in line with Payum convention.

Changes were as a result of PR review.
Removed dependency on TccAbstractModule by copying AbstractModuleNoTraits into Payum. I have, however, left the class separate, with Module class extending it. This is both for better separation of generic and Payum-specific Module.php content and also so that if anyone does wish to contribute improvements back to TccAbstractModule, there is more direct parity.

Changes were as a result of PR review.
Merge pull request #2 from tccltd/feature/organised-configuration

Organising configuration according to (one version of!) best-practice!
The glob() function we use for finding config files can return "false" on some platforms instead of an empty array when no files are found. This was causing an error in the foreach statement on these platforms. False is now transformed to an empty array to avoid this.

Note that glob() also returns "false" in an error case - unfortunately this does mean we can't tell the difference between no files found and an error in the glob() function.
Merge pull request #3 from tccltd/hotfix/error-if-glob-returns-false

AbstractModuleNoTrait's use of glob() must handle false return value