Setup Webpack & TypeScript (#316)

* TypeScript and WebPack.

* Minor cleanup.

* Add background.js as entry point to webpack.

* Use downloaded fonts for better performance.
Remove google-fonts-webpack-plugin.

* Add the remaining entry points and setup notification bar.

* Update readme for webpack.

* Convert CipherItems to TypeScript to demonstrate how a component looks in TS.

* Fix edge requirering a custom angular version.

* Rewrite gulp tasks for packaging releases.

* Re-add the webpack gulp plugin.

* Remove unessesary line in analytics.

.editorconfig

@@ -0,0 +1,16 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{js,ts,less}]
+charset = utf-8
+indent_style = space
+indent_size = 4