feat: ui polish

See merge request !83

* style(ui): better listing of namespaces regardless of description

* perf(ui): instead of following Location on resource creation, parse id

* fix(ui): creating new namespaces no longer triggers undefined requests

* fix: unquoted cors settings in properties file

* fix: Location header now uses scheme of baseUri instead of requestUri

* feat(ui): better avatar color algorithm

* chore: change debug to trace logging

* feat: support orderBy on GET /namespaces/:id/children

* perf(ui): use serverside filtering instead of clientside for namespaces

* fix: fix support for rsql =ex= operator

* fix(ui): fixes display of namespaces in general overview

* feat(ui): namespace header also has 'to parent ns' button

* feat(ui): support for child namespaces

* style(ui): improved generated avatar icons for datasets and namespaces

* feat(ui): added ordering to some listings

* fix(ui): remove titles from dataset and namespace menu

* feat(ui): add link to namespace to dataset header component

* fix: Fixed server exception when listing datasets with 'includeStats' & 'orderBy'

* feat(ui): use wildcard filtering for virtual table filter input