Improved Block hints

[jonathan-dh]

Block hints should be more user friendly than just listing template path, class and vars.

Replace with a "button" labeled "Inspect" that displays all block info in panel.

[jonathan-dh]

Inspect opens up panel with at least the following:

• [DONE] Edit XML Layout
• [DONE] Edit PHTML template
• [DONE] View Magento class docs

The following features would be nice in v1.0 (and should be fun an easy to implement) but could wait for 2.0:

[DONE] - Remove block wizard

• Move block wizard
• Override wizard