Update to angular-bootstrap 2.3.0 (hopefully fixes #40)

bower.json

@@ -21,7 +21,7 @@
     "angular-ui-sortable": "^0.14.3",
     "FileSaver": "https://raw.githubusercontent.com/eligrey/FileSaver.js/master/FileSaver.js",
     "blob": "*",
-    "angular-bootstrap": "^2.1.4",
+    "angular-bootstrap": "2.3.0",
     "bootstrap": "^3.3.7",
     "bootstrap-touchspin": "^3.1.2",
     "leaflet": "^1.0.1",