Removed deprecated stuff:
- old command line parameters.
- baked page extensions driven by `content_type`.
- old `asset` and `link` template variables.
Merged changes.

--HG--
branch : stable
Fix for multiple post loops per page:
- The `blog` object now returns uncached post iterators.
- Added unit test.

--HG--
branch : stable
Fixed Windows chef bootstrap to support spaces in chef path.

--HG--
branch : stable
Updated CHANGELOG, bumped version to 1.0.0-rc3.

--HG--
branch : stable
Added tag version_1.0.0-rc3 for changeset 5e413a4f06ba

--HG--
branch : stable
Merged with stable, bumped version.
Updated CHANGELOG.