Adds a first version of the wiki documentation

Contains:

• CLI user doc
• Assignment creation tutorial
• How to perform exercise tutorial

.gitignore

-.env
-
 aws.xml
 workspace.xml
 
@@ -184,11 +182,10 @@ web_modules/
 .yarn-integrity
 
 # dotenv environment variable files
-.env
-.env.development.local
-.env.test.local
-.env.production.local
-.env.local
+.env*
+.flaskenv*
+!.env.project
+!.env.vault
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache