Release of v5.0.3-alpha4

Fix database default fields to allow NULL. #1169. Fix the power list field to allow search. #1167. Expanded the Demo component in JCB v4 to include more advance features.

admin/forms/custom_code.xml

@@ -144,6 +144,7 @@
 			label="COM_COMPONENTBUILDER_CUSTOM_CODE_TYPE_LABEL"
 			description="COM_COMPONENTBUILDER_CUSTOM_CODE_TYPE_DESCRIPTION"
 			class="btn-group btn-group-yesno"
+			default="0"
 			required="true">
 			<!-- Option Set. -->
 			<option value="1">