Better rewrite/clean URL handling

- New roots-utils.php file for base functions
- Defined useful constants for dealing with common paths
- Refactored rewrites and clean URLs to be more flexible for non
  standard setups
- Custom scripts handler now deals with plugin scripts correctly
- Fixes #204, #270, #278

inc/roots-actions.php

@@ -1,7 +1,5 @@
 <?php
 
-add_action('roots_stylesheets', 'roots_get_stylesheets');
-
 function roots_get_stylesheets() {
   $styles = '';
   $styles .= stylesheet_link_tag('/style.css', 1);
@@ -25,7 +23,7 @@ function stylesheet_link_tag($file, $tabs = 0, $newline = true, $rel = 'styleshe
   return $indent . '<link rel="' . $rel .'" href="' . get_template_directory_uri() . '/css' . $file . '">' . ($newline ? "\n" : "");
 }
 
-add_action('roots_footer', 'roots_google_analytics');
+add_action('roots_stylesheets', 'roots_get_stylesheets');
 
 function roots_google_analytics() {
   $roots_google_analytics_id = GOOGLE_ANALYTICS_ID;
@@ -39,4 +37,6 @@ function roots_google_analytics() {
   }
 }
 
-?>
+add_action('roots_footer', 'roots_google_analytics');
+
+?>