Initial commit for Postgres Operator UI (#613)

* Initial commit for our basic Postgres Operator UI:
 * Create and modify Postgres manifests
 * Watch Operator Logs in the UI
 * Observe cluster creation progress
 * S3 Backup browser for clone and restore

Many thanks to Manuel Gomez and Jan Mussler for the initial UI work a long time ago!

ui/tox.ini

@@ -0,0 +1,27 @@
+[tox]
+envlist=py35,flake8,eslint
+
+[tox:travis]
+3.5=py35,flake8,eslint
+
+[testenv]
+deps=pytest
+commands=
+    pip install -r requirements.txt
+    python setup.py test
+
+[testenv:flake8]
+deps=flake8
+commands=python setup.py flake8
+
+[testenv:eslint]
+whitelist_externals=eslint
+changedir=app
+commands=eslint src
+
+[flake8]
+max-line-length=160
+ignore=E402
+
+[pylama]
+ignore=E402