Made improvements to ui

- Added a status bar to the map tab view.

- Made the messages table header fixed.

- No longer waiting for DOM ready to create jQuery ui tabs because
index.js is in the HTML body.  One of the root causes of the tabs
disappearing was due to the leaflet map being initialized before the
tabs were created.

- Removed the CSS3 vh/vw rules that were causing issues.  Now the map
and messages are resized during the window onresize event.

- Implemented ability to delete all messages.