Div for Neo4j error in web UI

[Djent-]

• Position bottom center
• Close button

Wrap draw() around a try catch to populate error message

[Djent-]

Left to do:

• Make div
• Give it an ID
• Create the close button
• Create the toggle function using the others as a template
• Have the error handle toggle the div if not visible, populate message

[Djent-]

Target for release 3.0