Issue 1806 - exploding colons. (#57)

Co-authored-by: ajstanley <alanjarlathstanle@gmail.com>

src/Form/JsonLdSettingsForm.php

@@ -57,6 +57,7 @@ class JsonLdSettingsForm extends ConfigFormBase {
       $rdf_namespaces .= $namespace['prefix'] . '|' . $namespace['namespace'] . "\n";
     }
     $mapping_string = '';
+    ksort($mappings_from_hook);
     foreach ($mappings_from_hook as $pref => $nspace) {
       $mapping_string .= "$pref|$nspace \n";
     }

src/Normalizer/NormalizerBase.php

@@ -57,7 +57,7 @@ abstract class NormalizerBase extends SerializationNormalizerBase implements Den
    */
   public static function escapePrefix($predicate, array $namespaces) {
 
-    $exploded = explode(":", $predicate);
+    $exploded = explode(":", $predicate, 2);
     if (!isset($namespaces[$exploded[0]])) {
       return $predicate;
     }