Refactored frontend for the rebaseline server.
This is going to serve as the starting point for the new front-end once the backend is rewritten.

BUG=skia:
NOTRY=true
R=jcgregorio@google.com

Author: stephana@google.com

Review URL: https://codereview.chromium.org/538613002
diff --git a/.gitignore b/.gitignore
index cedd0ba..ceacb7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 third_party/externals
 tools/bug_chomper/oauth_client_secret.json
 xcodebuild
+bower_components