Resolved gh-341 that adds the feature to expand the custom field option far beyond the default. Moved the menu prefix option in to the Joomla component area -> tab -> Settings to allow each component to override the global setting.

admin/models/forms/help_document.xml

@@ -101,7 +101,8 @@
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_TYPE_DESCRIPTION"
 			class="list_class"
 			multiple="false"
-			required="true">
+			required="true"
+			default="">
 			<!-- Option Set. -->
 			<option value="">
 				COM_COMPONENTBUILDER_HELP_DOCUMENT_SELECT_AN_OPTION</option>
@@ -128,6 +129,7 @@
 			label="COM_COMPONENTBUILDER_HELP_DOCUMENT_LOCATION_LABEL"
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_LOCATION_DESCRIPTION"
 			class="btn-group"
+			default=""
 			required="true">
 			<!-- Option Set. -->
 			<option value="1">
@@ -143,6 +145,7 @@
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_ADMIN_VIEW_DESCRIPTION"
 			class="list_class"
 			multiple="false"
+			default=""
 			required="true"
 			button="false"
 		/>
@@ -154,6 +157,7 @@
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_SITE_VIEW_DESCRIPTION"
 			class="list_class"
 			multiple="false"
+			default=""
 			required="true"
 			button="false"
 		/>
@@ -191,6 +195,7 @@
 			label="COM_COMPONENTBUILDER_HELP_DOCUMENT_URL_LABEL"
 			size="60"
 			maxlength="150"
+			default=""
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_URL_DESCRIPTION"
 			class="text_area"
 			required="true"
@@ -207,6 +212,7 @@
 			label="COM_COMPONENTBUILDER_HELP_DOCUMENT_TARGET_LABEL"
 			description="COM_COMPONENTBUILDER_HELP_DOCUMENT_TARGET_DESCRIPTION"
 			class="btn-group"
+			default=""
 			required="true">
 			<!-- Option Set. -->
 			<option value="1">