Fix datepicker functionality for Bootstrap 5 x-editable

- Updated Gruntfile to use npm bootstrap-datepicker instead of bundled version
- Fixed DPGlobal reference from bdatepicker to datepicker
- Changed mode from inline to popup to ensure date input type is used
- Fixed missing type assignment in editable element initialization
- Enhanced input2value function with fallback logic to extract dates from dates array
- Added comprehensive debugging and error handling
- Datepicker now properly opens, captures selections, and submits formatted dates

src/element/editable-element.js

@@ -38,7 +38,10 @@ Makes editable any HTML element on the page. Applied as jQuery method.
             this.input = $.fn.editableutils.createInput(this.options);
             if(!this.input) {
                 return; 
-            }            
+            }
+            
+            // Set the editable's type from the input's type
+            this.type = this.input.type;            
 
             //set value from settings or by element's text
             if (this.options.value === undefined || this.options.value === null) {