admin-ui: Fix typo in notifications

Fix apyrgio/synnefo#220
admin-ui: Fix JS bug

When the user was pressing shift in an input or a textarea couldn't
keep typing.

Fix apyrgio/synnefo#120
admin-ui: Add "reload table" button in the notification area

This is a simple approach of a suggestion that is written in the
issue: apyrgio/synnefo#183