add all the static sources

[searls]

lineman is full of directories that are basically flat static hierarchies to be copied into dist (app/img, vendor/webfonts, app/static, etc).

I propose we discourage the more interesting ones in favor of just "app/static" and "vendor/static" by leaving them out of the blueprint, but that we fetch all of the currently supported lineman trees anyway for compatibility

this should all be doable with the broccoli static compiler.

[searls]

Just to take inventory of this, I'm pretty sure we're talking about:

Places I think we should recommend folks stick this stuff in the future:

• app/static
• vendor/static

Places that current lineman also supports folks placing stuff but is really just redundant and/or confusing

• app/img
• vendor/img
• vendor/webfonts

I think I'd like to support all these out the gate but only include app/static & vendor/static in the blueprint