Merge branch 'master' of https://github.com/Muon/edgy
Merge branch 'master' of https://github.com/snapapps/edgy
Merge branch 'master' of https://github.com/snapapps/edgy
Merge branch 'master' of https://github.com/snapapps/edgy
Use d3.selection.text() instead of setting textContent
Add 'rename node' block
Change TMDB browser to not use node labels
Remove node label interfaces

This removes the node label interfaces, but some of the underlying
logic is kept for compatibility purposes. All new programs should
use only labels.
Merge pull request #222 from Muon/master

Remove need for node labels
Fix 'set edge attribs' block parameter to use edge field for edge
Simplify builtin attribute handling
Clarify block UI attribute name-getting methods

There was some possible confusing with getNodeAttribDict() and
getEdgeAttribDict()
Really use d3.selection.text() instead of setting textContent
Improve error handling for (non)existent nodes/edges
Fix brace style
Improve node attribute handling

Node attribute handling is now separated out into its own structure.

Setting color and scale will no longer reset the layout. Also, it is
now possible to use the attribute interface to examine and modify the
position of nodes, with similar behavior to mouse movement.
Properly test the definedness of attr defaults
Fix erroneous usage of 'this' instead of 'myself'

This should deal with #217.
Improve edge attribute handling

Edge attribute handling now lives in a similar structure to node
attribute handling.

This fixes the previously broken updating of the width of edges.

Furthermore, setting the color of edges will no longer reset the
layout, and neither will setting the width of edges.
Generate the list of special node attributes automatically