Revise page.tpl.php

Problem/Motivation

The page.tpl.php needs some revision in its use of classes, names, and the placing of certain elements.

This will affect some existing themes, so these changes should be noted carefully in the release notes of the next version. The changes will not necessarily be major or hard to revert, but in case sites experience problems they should be able to find this issue.

Proposed resolution

Modify the page.tpl.php for the next release.

Remaining tasks

• Support all default regions. This theme attempts to be minimal, but this should not be done at the expense of removing the default regions.
• Correct all indentation and convert tabs into spaces.

User interface changes

This may/will affect the appearance of sites relying on the old template structure, and those sites will need to copy the original page.tpl.php into their sub-theme.

API changes

• Header region moved to be situated below site info instead of above it.
• Removal of .navigation class on secondary menu.
• Some new classes.