Change version of angular-bootstrap to 2.2.x

Downgrading a bit to avoid issue with 2.3.0:

angular-ui/bootstrap#6364

Author: jeff-phillips-18

Diff for: bower.json

@@ -40,7 +40,7 @@
     "angular": "1.5.*",
     "angular-animate": "1.5.*",
     "angular-sanitize": "1.5.*",
-    "angular-bootstrap": "2.3.x",
+    "angular-bootstrap": "2.2.x",
     "lodash": "4.x",
     "patternfly": "~3.15.0"
   },