First round of filters and hooks

Add filters and hooks, domain variable, misc clean
Some more filters and documentation
add some features and update readme
Custom post type taxonomy support

Check if other post types support built-in taxonomies before removing
them from the admin
Add to list of functionality and FAQ
Update README.md
Update README.md
Clean up Admin CSS
update documentation
Modify redirect filter name
Add version and license details
Update README.md
Update README.md
Redirects and minor changes

Add front-page redirects
Change name of post type taxonomy function
Update ready
Cleanup redirect code
Fix filters
Add first media query
Add plugin links
Update search query override

This works much better now
correct error message text