chore(bower): set angular to v1.2.17

Due to angular/angular.js#7842, we can't, for now, use Angular v1.2.18, as it is bugging the dropdown directive.

bower.json

@@ -2,10 +2,10 @@
     "name": "frontkit",
     "version": "0.0.1",
     "dependencies": {
-        "angular": "~1.2.10"
+        "angular": "1.2.17"
     },
     "devDependencies": {
-        "angular-mocks": "~1.2.10",
+        "angular-mocks": "1.2.17",
         "chai": "~1.9.1",
         "holderjs": "~2.3.1",
         "highlightjs": "~8.0.0",