Started the "overview" pages as landing page of each topic.

a bit tricky to automate I reckon

docs/programming/.pages

@@ -0,0 +1,4 @@
+
+nav:
+ - index.md
+ - ...

docs/programming/index.md

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+# Overview
+
+
+## hugo 
+
+## ledoux
+
+# potat
+
+Lemongrass frosted gingerbread bites banana bread orange crumbled lentils sweet potato black bean burrito green pepper springtime strawberry ginger lemongrass agave green tea smoky maple tempeh glaze enchiladas couscous. Cranberry spritzer Malaysian cinnamon pineapple salsa apples spring cherry bomb bananas blueberry pops scotch bonnet pepper spiced pumpkin chili lime eating together kale blood orange smash arugula salad. Bento box roasted peanuts pasta Sicilian pistachio pesto lavender lemonade elderberry Southern Italian citrusy mint lime taco salsa lentils walnut pesto tart quinoa flatbread sweet potato grenadillo.

docs/python/index.md

@@ -1,4 +1,5 @@
-# Python
+# Overview
+
 Python is a programming language that's easy to read, write, and understand. It's used a lot in Geomatics because:
 
 - **Quick to write:** When making scripts for data analysis, most of the time you care a lot about how fast you can *write* the code and not too much about how fast the code will *run*. Python is very quick to *write*.

docs/writing/.pages

@@ -1,4 +1,5 @@
 nav:
+ - Overview: index.md
  - Intro to LaTex: latexintro.md
  - Markdown: markdown.md
  - ...