Fixed broken dependency

Author: Gid733

eform-client/package.json

@@ -29,7 +29,7 @@
     "@angular/platform-browser": "^4.2.4",
     "@angular/platform-browser-dynamic": "^4.2.4",
     "@angular/router": "^4.2.4",
-    "angular-2-dropdown-multiselect": "^1.6.3",
+    "angular-2-dropdown-multiselect": "1.6.3",
     "angular2-uuid": "^1.1.1",
     "bootstrap": "^3.3.7",
     "bootstrap-datepicker": "^1.6.4",