Use new designer bindings

[oowekyala]

Refs pmd/pmd#2363, #33

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Now the "main attribute" of nodes is displayed in the tree like so:

I think over time this will payoff as we're not dependent on the image anymore to have a "grokkable" tree.

Nodes can be folded by default (the behavior is implemented by the designer) but this is not opted in by any language module yet. A couple of observations on the java tree:

• the "main attribute" of ImportDeclaration in java is @ImportedName and it could be folded by default
• the main attr of VariableDeclaratorId is @Name and not @Image
• we could fold Type nodes by default
• Annotation could be folded by default, it needs a main attribute. Currently there is @AnnotationName, we could expose rather a @SimpleName at least, and @BinaryName based on the type resolution result (and on java-grammar, on the disambiguation result - which makes me realize I forgot to implement disambiguation for annotations)

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The XPath attributes panel is revamped to a table, "extra info" is listed at the bottom (this includes the type):

As you can see there are now visual cues for deprecated attributes, there is even a tooltip:

Note that those two screenshots were taken on an earlier version, now the attributes are also sorted alphabetically

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This is a draft because I'm thinking about adding some styling to the treeview to make it more readable. I think this is ready now. Suggestions are welcome