ENYO-1887: (DONOTMERGE) Add filter feature for the components palette of the designer

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-1887

Add components palette filtering feature. The filter can be reseted by clicking on the related text input icon.
Palette filtering is not case-sensitive.



Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com