Add anchors for UPDATING, commit history

[chrullrich]

I think there should be a way to link directly to the part of the ports page below the dependency lists (which can be long and difficult to scroll past without overshooting).

With a keyword set up in the browser, I can enter, e.g. "fp www/apache24" and end up at http://www.freshports.org/www/apache24. It would be most helpful if I could jump directly to the interesting parts, such as the UPDATING entries and the commit history:

• http://www.freshports.org/www/apache24#updating
• http://www.freshports.org/www/apache24#commits
• etc.

There are some anchors, e.g. "mastersites", but they look more like development artifacts.

[dlangille]

I worked on this on the plane home from DefCon 23. The code will make to to the dev server soon.

As for mastersites, that's an id tag, meant for use when collapsing large sections sections. There are others.