add contribute cards from internal

external/contribute/add-edit-card/add-edit-card.md

+---
+layout: page
+permalink: /internal/contribute/add-edit-card/
+shortcut: contribute:add-edit-card
+redirect_from:
+  - /cards/contribute:add-edit-card
+  - /internal/cards/contribute:add-edit-card
+  
+---
+# How to add or edit a howto card
+
+This shows how to use Visual Studio Code to write a howto-card:
+
+## Step 0: Update your local copy of your fork
+
+Please update your fork first, by View > Command Palette and searching for 'Git: Fetch from all remotes'.
+
+## Step 1: Create a new Branch
+
+For each how-to card, it is strongly recommended to create a new branch.
+
+- click on:
+    <img src="visual-code_img_1.png" height="50">  (on the bottom left)
+
+- click on: `create new branch from...`
+
+    <img src="visual-code_img_2.png">
+
+- add a name of the branch (e.g., name of the how-to card) and press Enter
+
+- choose `upstream/develop`
+
+    <img src="visual-code_img_3.png">
+
+- the new branch is created as can be seen on the bottom left of the screen
+
+    <img src="visual-code_img_4.png">
+
+
+## Step 2: Create a new folder
+
+- To create a new folder, browse to `howto-cards-internal`
+
+    <img src="visual-code_img_5.png">
+
+- Then, select the `internal` folder:
+
+    <img src="visual-code_img_6.png">
+
+- Click on new folder (the name of the folder should be the name of the howto card). Please only use lowercase letters.
+
+    <img src="visual-code_img_7.png" height="60">
+
+## Step 3: Create a new file
+
+- Click on `New file`. Name the file the same as the folder using lowercase letters linked by dashes
+
+    <img src="visual-code_img_8.png" height="60">
+
+## Step 4: Write the procedure in Markdown
+
+If you need more details on how to do this, refer to the [corresponding howto-card](.../write-markdown).
+
+## Step 5: Commit your changes
+
+- on the left side click on:  <img src="visual-code_img_11.png" height="50" width="50">
+
+- below changes click on:
+
+    <img src="visual-code_img_12.png">
+
+    stated changes
+
+- add a message (description of your changes) and click "commit"
+
+    <img src="visual-code_img_13.png">
+
+## Step 6: Push to git-r3lab
+
+- When you push your procedure for the first time click on the cloud icon:
+
+    <img src="visual-code_img_15.png">
+
+- Choose origin/"your gitlab user name"
+- Open git-r3lab: https://git-r3lab.uni.lu/
+
+    <img src="visual-code_img_16.png">
+
+- To synchronize changes: <img src="visual-code_img_17.png">