Modal dialog at center

engine/wrapper/resources/templates/block.modal.sysmsg.go

@@ -1,3 +1,3 @@
 package templates
 
-var BlockModalSysMsg = []byte(`<div class="modal fade" id="sys-modal-msg" tabindex="-1" role="dialog" aria-labelledby="sysModalMsgLabel" aria-hidden="true"><div class="modal-dialog" role="document"><div class="modal-content"><div class="modal-header"><h5 class="modal-title" id="sysModalMsgLabel"></h5><button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button></div><div class="modal-body" id="sysModalMsgBody"></div><div class="modal-footer" id="sysModalMsgButtons"><button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button></div></div></div></div>`)
+var BlockModalSysMsg = []byte(`<div class="modal fade" id="sys-modal-msg" tabindex="-1" role="dialog" aria-labelledby="sysModalMsgLabel" aria-hidden="true"><div class="modal-dialog modal-dialog-centered" role="document"><div class="modal-content"><div class="modal-header"><h5 class="modal-title" id="sysModalMsgLabel"></h5><button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button></div><div class="modal-body" id="sysModalMsgBody"></div><div class="modal-footer" id="sysModalMsgButtons"><button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button></div></div></div></div>`)

engine/wrapper/resources/templates/block.modal.sysmsg.html

@@ -1,5 +1,5 @@
 <div class="modal fade" id="sys-modal-msg" tabindex="-1" role="dialog" aria-labelledby="sysModalMsgLabel" aria-hidden="true">
-	<div class="modal-dialog" role="document">
+	<div class="modal-dialog modal-dialog-centered" role="document">
 		<div class="modal-content">
 			<div class="modal-header">
 				<h5 class="modal-title" id="sysModalMsgLabel"></h5>