minor overview of the folder structure for frontend

frontend/doc/OVERVIEW.md

@@ -1,9 +1,9 @@
 Development overview
 ====================
 
-This should give an idea about the contents of the `./frontend` folder.
+This should give an idea about the contents of the `./frontend` folder. Most of what you find here is an amalgamation of [AngularJS](https://angularjs.org) and JQuery, as well as a good list of libraries used to ease the process of development.
 
-This is the general structure (:
+This is the general structure (to a depth of 3 folders):
 
 ```
 ├── app
@@ -31,7 +31,7 @@ This is the general structure (:
 │   │   ├── helpers
 │   │   ├── models
 │   │   └── services
-│   ├── [ 12K]  ui_components
+│   ├── ui_components
 │   │   ├── date
 │   │   └── filters
 │   └── work_packages
@@ -61,3 +61,13 @@ This is the general structure (:
         ├── reports
         └── tests
 ```
+
+## The `app` folder
+
+This is where most of the magic happens. Contains all of the production relevant code for excuting the individual parts of the frontend. Does __not__ contain the test code.
+
+The `app` folder is furthermore divided into:
+    - `work_packages` contains all the specific sources for the Work Package list and the attached details pane, as well as the full screen view
+    - `timelines` contains all code necessary for project timelines
+    - `time_entries` contains a single controller used in the timelog views 
+    - all the rest of the folders containing common components divided by their type

frontend/doc/README.md

@@ -29,3 +29,4 @@ The individual topic for the documentation fo the frontend are
 - OVERVIEW.md - a general overview on the folder structure and a general "what is where"
 - TESTING.md - documentation of our approach to integration and unit testing
 - STYLING.md - notes on styling and the Sass-Pipeline
+- RAILS.md - an overview for the frontend parts still left in the Rails stack (mostly the JavaScript