JavaScript Fix for ckan modules

This fixes a lot of JavaScript issues with ckan modules in Internet Explorer 7. Essentially IE7 doesn't have the subtype window.SyntaxError and the majority of times this is falling through the if statement and still throwing the error (because the error type in IE7 is window.Error). This fix makes a lot of modules work, however since I don't have much visibility on the codebase yet I'm not sure what the implications on changing such a re-used bit of code would be.

ckan/public/base/javascript/module.js

@@ -350,11 +350,7 @@ this.ckan = this.ckan || {};
           // If we have a boolean attribute (no value) then set to true.
           value = attr.value === "" ? true : jQuery.parseJSON(attr.value);
         } catch (error) {
-          if (error instanceof window.SyntaxError) {
-            value = attr.value;
-          } else {
-            throw error;
-          }
+          value = attr.value;
         }
 
         options[jQuery.camelCase(prop)] = value;