This attempts to fix several issues:
1. The regexp that's supposed to catch href's doesn't work at all and even if it did match anything, it has too many parentheses for the following loop.
2. When a relative URL is replaced then it is done globally on the text and not per instance. So this `<a href="/foo/bar">/foo/bar</a>` will incorrectly get reformatted to `<a href="./static/foo/bar">./static/foo/bar</a>`.
3. Query parameter URLs are rewritten but shouldn't: `<a href="?foo=bar">` gets rewritten to `<a href="./static/?foo=bar">`
4. The joiner is producing too many slashes: `"." + "static" + "/files/image.png"` => `./static//files/image.png`.
Added some more notes about how this is working on the documentation. I do think
that the overall structure is clearer now, and easiest to understand. After all,
that's how it should always be !
--HG--
rename : pelican/processors.py => pelican/generators.py
rename : pelican/generators.py => pelican/writers.py
