Include port numbers when assembling URLs

Per #275.
Include port numbers when assembling URLs

Closes #275.
Only save history data to laws_meta if it exists

Closes #296.
Remove "repealed" records from laws_meta

Per #294.
Ignore config files & the Virginia custom class
Calculate and store structural statistics

Per #247.
Support the storage of structural metadata

Per #247.
Generate structural statistics

Per #247.
Increase the size of the header

The default layout is jumbled without this space.
Correct a variable name

Was using the wrong variable name, breaking the whole method.
Remove clipboard functionality from permalinks

This is only until they're resolved in #327, as part of the UI release.
Offload plain text rendering to Law.inc.php

We actually already offloaded it; now we're removing the extra text generation from law.php. Per #160 and #161.
Replace wpautop with nl2br

`wpautop()` wraps even single-paragraph blocks of text in `<p>` tags, which we do not want. So replace those paragraph tags with break tags instead.
Generate structural statistics

Per #247.
Increase the size of the header

The default layout is jumbled without this space.
Remove clipboard functionality from permalinks

This is only until they're resolved in #327, as part of the UI release.
Offload plain text rendering to Law.inc.php

We actually already offloaded it; now we're removing the extra text
generation from law.php. Per #160 and #161.
Add a docblock
Correct a variable name

Was using the wrong variable name, breaking the whole method.
Respect the presence of port numbers in URLs