Lines, points editable

Clicking the Edit Map button allows you to move dots and edit lines by
double clicking them. Double clicking again ends editing. Changes to
graphics don't yet have an effect on location data in the database.
Moved Map Edit Function

Moved the function to edit lines and points to a link in the dialog that
only appears if the user has logged in. Currently trying to figure out
how to determine what graphic to edit now that the editing isn't
triggered by a double click event on said graphic.