exposure export tool: jquery/draw-tool bug

[Ben Wyss]

There is a bug in the exposure export tool selection box tool.

to reproduce this issue:
zoom in and make a selection using the draw selection box tool, zoom out, and back in, pull another selection box. continue until you get the following error:

Uncaught TypeError: Property '$' of object [object Object] is not a function exposure_export.html:510
(anonymous function) exposure_export.html:510
n.Mixin.Events.fireEvent leaflet.js:5
L.Rectangle.Draw.L.SimpleShape.Draw.extend._fireCreatedEvent leaflet.draw.js:317
L.SimpleShape.Draw.L.Handler.Draw.extend._onMouseUp leaflet.draw.js:273
t.(anonymous function).a

[Lars Butler (lars-butler)]

Solved in pull request https://github.com/gem/oq-platform/pull/33 by commit https://github.com/gem/oq-platform/commit/0099d4a36f4913c725cd16e778e5cc1f968c7e15.

Note: The primary objective of this pull request is to fix bug # 1182426.