UPdating changelog for the latest 1.3 changes

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | -
| Fixed tickets | -
| Refs tickets  | #1605, #1601, #1599, 
| License       | MIT
| Doc PR        | -

See https://github.com/zikula/core/pull/1605