Allow config to define the graph's parent element.
Merge pull request #42 from knowledge-map/parent-element

Allow config to define the graph's parent element
Zoom setup is now handled better in dagre-d3 fork.
Modal rendering is now more straightforward.
Improved link appearance in modals.
Allowed for vertical auto scroll in edit modals.
Edit modals don't reset when adding new content
Changed HTML generation in edit modals to d3
Changed adding new content to edit modals
Merge pull request #47 from knowledge-map/edit-modal-reset

Merged #47.
Construct modals using D3 and bring back rounded corners in edit modals.
Merge pull request #48 from knowledge-map/modal-render-d3

Construct modals using D3 and bring back rounded corners in edit modals.