Introducing Pillar Framework

Refactor of pillar-server and pillar-web into a single python package. This
simplifies the overall architecture of pillar applications.

Special thanks @sybren and @venomgfx

src/styles/project-main.sass

@@ -0,0 +1,19 @@
+@import _normalize
+@import _config
+@import _utils
+
+@import _comments
+@import _project
+@import _project-sharing
+@import _project-dashboard
+@import _error
+
+@import _base
+@import _notifications
+@import _search
+
+@import _font-pillar
+
+@import plugins/_jstree
+@import plugins/js_perfectscrollbar
+@import plugins/_js_select2