ENYO-1836: Update onyx.design with missing components and components to ignore in the palette's designer of Ares

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-1836

Update onyx.design with missing components and components to ignore in the designer's palette of Ares. Lighten components description, management

Must be reviewed (first) by @yves-del-medico and is related to other PRs:
* https://github.com/enyojs/ares-project/pull/632
* https://github.com/enyojs/enyo/pull/523
* https://github.com/enyojs/layout/pull/61

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com