bower_components is commented by default

VisualStudio.gitignore

@@ -185,9 +185,12 @@ ClientBin/
 *.pfx
 *.publishsettings
 node_modules/
-bower_components/
 orleans.codegen.cs
 
+# Since there are multiple workflows, uncomment next line to ignore bower_components 
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
 # RIA/Silverlight projects
 Generated_Code/