Move pelican site to obsolete-pelican subdirectory. Copy site-opengamestudio en/ru and index here

obsolete-pelican/README.md

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+**Notes**:
+
+* Pelican site has been replaced with custom solution by 16 April 2019
+* The old Pelican site is now kept solely for historical reasons
+
+# Overview
+
+This is an internal document describing how to update
+[Opensource Game Studio website][opengamestudio]
+powered by [Pelican][pelican].
+
+# Installation
+
+Install Pelican with the following command:
+
+```
+sudo apt install pelican
+```
+
+# Preview
+
+To preview results locally:
+
+* generate local copy with the following commands:
+    ```
+    cd pelican
+    pelican -s pelicanconf.py
+    ```
+* serve the local copy with the following commands:
+    ```
+    cd output
+    python -m SimpleHTTPServer
+    ```
+
+The preview should now be available at [http://localhost:8000][preview].
+
+# Publishing
+
+To publish new content:
+
+* generate public site with the following commands:
+    ```
+    cd pelican
+    pelican -s publishconf.py
+    ```
+
+* upload it to GitHub with the following commands:
+    ```
+    git add .
+    git push
+    ```
+
+The public site should now be available at
+[Opensource Game Studio website][opengamestudio].
+
+[opengamestudio]: http://opengamestudio.org
+[pelican]: http://getpelican.com
+[preview]: http://localhost:8000
+