Switch to sap_belize, untrack .user.project.json

Author: gregorwolf

.gitignore

@@ -13,4 +13,4 @@ mock_preview_sapui5.html
 /dist/
 .user.project.json
 .gitignore
-/.user.project.json
+/.user.project.json

.user.project.json

@@ -10,7 +10,7 @@
 	<script id="sap-ui-bootstrap"
 			src="resources/sap-ui-core.js"
 			data-sap-ui-libs="sap.m"
-			data-sap-ui-theme="sap_bluecrystal"
+			data-sap-ui-theme="sap_belize"
 			data-sap-ui-compatVersion="edge"
 			data-sap-ui-resourceroots='{"com.sap.sapmentors.sitreg.events": "."}'
 			data-sap-ui-frameOptions="trusted">