Improvements to the UI + a few minor bug fixes/code reviews

Hi, thanks for a great module.

I'm the maintainer of Page Title and thought I'd give this a whirl - thanks for getting it Page Title compliant again.

I attach a patch which contains several fixes to code compliance (use of theme_table() rather than theme('table') for instance) and some tweaks to the way tables are displayed. This included adding a new CSS file + some CSS classes to the tables.

This produces a neat green/yellow/red with tick, warning and error symbols (like the status report page) making it MUCH easier to find the rows with errors.

One caveat... the CSS is hardcoded to /misc/error.png, etc.... So if the site is running in a sub-folder it will likely fail to show images. We cannot code a relative path as we dont know where the module will be installed. I'm not sure how to address this... but it's only a minor issue. Row colouring will still work and the site wont die...