@site_updated now returns the time of the most recently updated conte…

…nt file/folder

app/helpers.inc.php

@@ -87,6 +87,18 @@ static function last_modified($dir) {
 		return $last_modified;
 	}
 
+	static function site_last_modified($dir = './content') {
+	  $last_updated = 0;
+		foreach(Helpers::list_files($dir, '/.*/', false) as $file) {
+			if(filemtime($file) > $last_updated) $last_updated = filemtime($file);
+			if(is_dir($file)) {
+			  $child_updated = self::site_last_modified($file);
+			  if($child_updated > $last_updated) $last_updated = $child_updated;
+			}
+		}
+		return $last_updated;
+	}
+
   static function translate_named_entities($string) {
     $mapping = array('''=>''', '−'=>'-', 'ˆ'=>'^', '˜'=>'~', 'Š'=>'Š', '‹'=>'‹', 'Œ'=>'Œ', '‘'=>'‘', '’'=>'’', '“'=>'“', '”'=>'”', '•'=>'•', '–'=>'–', '—'=>'—', '˜'=>'˜', '™'=>'™', 'š'=>'š', '›'=>'›', 'œ'=>'œ', 'Ÿ'=>'Ÿ', 'ÿ'=>'ÿ', 'Œ'=>'Œ', 'œ'=>'œ', 'Š'=>'Š', 'š'=>'š', 'Ÿ'=>'Ÿ', 'ƒ'=>'ƒ', 'ˆ'=>'ˆ', '˜'=>'˜', 'Α'=>'Α', 'Β'=>'Β', 'Γ'=>'Γ', 'Δ'=>'Δ', 'Ε'=>'Ε', 'Ζ'=>'Ζ', 'Η'=>'Η', 'Θ'=>'Θ', 'Ι'=>'Ι', 'Κ'=>'Κ', 'Λ'=>'Λ', 'Μ'=>'Μ', 'Ν'=>'Ν', 'Ξ'=>'Ξ', 'Ο'=>'Ο', 'Π'=>'Π', 'Ρ'=>'Ρ', 'Σ'=>'Σ', 'Τ'=>'Τ', 'Υ'=>'Υ', 'Φ'=>'Φ', 'Χ'=>'Χ', 'Ψ'=>'Ψ', 'Ω'=>'Ω', 'α'=>'α', 'β'=>'β', 'γ'=>'γ', 'δ'=>'δ', 'ε'=>'ε', 'ζ'=>'ζ', 'η'=>'η', 'θ'=>'θ', 'ι'=>'ι', 'κ'=>'κ', 'λ'=>'λ', 'μ'=>'μ', 'ν'=>'ν', 'ξ'=>'ξ', 'ο'=>'ο', 'π'=>'π', 'ρ'=>'ρ', 'ς'=>'ς', 'σ'=>'σ', 'τ'=>'τ', 'υ'=>'υ', 'φ'=>'φ', 'χ'=>'χ', 'ψ'=>'ψ', 'ω'=>'ω', 'ϑ'=>'ϑ', 'ϒ'=>'ϒ', 'ϖ'=>'ϖ', ' '=>' ', ' '=>' ', ' '=>' ', '‌'=>'‌', '‍'=>'‍', '‎'=>'‎', '‏'=>'‏', '–'=>'–', '—'=>'—', '‘'=>'‘', '’'=>'’', '‚'=>'‚', '“'=>'“', '”'=>'”', '„'=>'„', '†'=>'†', '‡'=>'‡', '•'=>'•', '…'=>'…', '‰'=>'‰', '′'=>'′', '″'=>'″', '‹'=>'‹', '›'=>'›', '‾'=>'‾', '⁄'=>'⁄', '€'=>'€', 'ℑ'=>'ℑ', '℘'=>'℘', 'ℜ'=>'ℜ', '™'=>'™', 'ℵ'=>'ℵ', '←'=>'←', '↑'=>'↑', '→'=>'→', '↓'=>'↓', '↔'=>'↔', '↵'=>'↵', '⇐'=>'⇐', '⇑'=>'⇑', '⇒'=>'⇒', '⇓'=>'⇓', '⇔'=>'⇔', '∀'=>'∀', '∂'=>'∂', '∃'=>'∃', '∅'=>'∅', '∇'=>'∇', '∈'=>'∈', '∉'=>'∉', '∋'=>'∋', '∏'=>'∏', '∑'=>'∑', '−'=>'−', '∗'=>'∗', '√'=>'√', '∝'=>'∝', '∞'=>'∞', '∠'=>'∠', '∧'=>'∧', '∨'=>'∨', '∩'=>'∩', '∪'=>'∪', '∫'=>'∫', '∴'=>'∴', '∼'=>'∼', '≅'=>'≅', '≈'=>'≈', '≠'=>'≠', '≡'=>'≡', '≤'=>'≤', '≥'=>'≥', '⊂'=>'⊂', '⊃'=>'⊃', '⊄'=>'⊄', '⊆'=>'⊆', '⊇'=>'⊇', '⊕'=>'⊕', '⊗'=>'⊗', '⊥'=>'⊥', '⋅'=>'⋅', '⌈'=>'⌈', '⌉'=>'⌉', '⌊'=>'⌊', '⌋'=>'⌋', '⟨'=>'〈', '⟩'=>'〉', '◊'=>'◊', '♠'=>'♠', '♣'=>'♣', '♥'=>'♥', '♦'=>'♦');
     foreach (get_html_translation_table(HTML_ENTITIES, ENT_QUOTES) as $char => $entity){

app/page-data.inc.php

@@ -123,7 +123,7 @@ static function create_vars($page) {
 		# @base_url
 		$page->base_url = $_SERVER['HTTP_HOST'].str_replace('/index.php', '', $_SERVER['PHP_SELF']);
 		# @site_updated
-		$page->site_updated = strval(date('c'));
+		$page->site_updated = strval(date('c', Helpers::site_last_modified()));
 		# @updated
 		$page->updated = strval(date('c', Helpers::last_modified($page->file_path)));