admin-ui: Add css file
Merge branch 'feature-admin-ui-demo' into feature-admin
admin-ui: Trim data of table cell when need it

If the content (stripped data) has more characters than 30 will be
truncated.

The user can click the trimmed value to see the complete
data.

Fix apyrgio/synnefo#196
Merge branch 'feature-admin-ui-demo' into feature-admin