convert Settings module to Routes. refs #1788. requires route reload.

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| Refs tickets  | #1788
| License       | MIT
| Doc PR        | -
@Guite @cmfcmf see [line 248](https://github.com/zikula/core/pull/1974/files#diff-61406abdba00fff03de2c61b6172cbb1R248) below. Are other changes required?