Add install documentation

doc/Install.md

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+# Installation steps
+
+## Database
+These steps are based on an installation on a RHEL-based distro (Fedora in this case).
+All these commands are run from the root of the git clone.
+
+### packages
+``` shell
+sudo dnf update
+sudo dnf install postgresql postgresql-server
+sudo postgresql-setup --initdb
+```
+If you use virtual environments:
+``` shell
+virtualenv -p python3 venv
+source venv/bin/activate
+```
+If you do not use virtual environments, the following needs to run as root (sudo):
+``` shell
+pip3 install -r requirements.txt
+```
+
+### Database preparation
+Run the following in psql:
+```
+create database tjadb;
+create user tjadb with encrypted password 'tjadb';
+grant all privileges on database tjadb to tjadb;
+\i lib/db_model.sql
+```
+
+### Configuration
+Next, configure the login config in `/var/lib/pgsql/data/pg_hba.conf`
+``` shell
+local    all             all                                     md5
+host     all             all             127.0.0.1/32            md5
+
+```
+
+
+## Configuration
+This section configures the website from the `etc/configuration.ini` file.
+
+### Web
+#### Host & Port
+This configures the interface and port the site will run on. `0.0.0.0` means all interfaces
+
+#### URL
+Set this to the base url of the website (e.g: `https://example.com`. Don't add the trailing `/`
+
+#### Debug
+If you run the website in debug mode, you will receive error messages on the site, when something goes wrong.
+If you want to disable this, set the Debug value to False
+
+### Database
+#### Host & Port
+This configures the host and port of the database. If it runs on the same system, leave it to `127.0.0.1`
+
+#### User & Password
+Configures the database user & password that will connect to the DB
+
+#### DBName
+The database name of the website. Default is `tjadb`
+
+#### Pepper
+This is a fixed string that gets added when encrypting user passwords. This is an extra layer of security in case of a database breach.
+
+### Redis
+This is optional. This is only used when you use Redis for caching.
+
+#### Host & Port
+Configures the host and port of the database. If it runs on the same system, leave it to `127.0.0.1`
+
+#### Password
+Password for the database. Default: no password
+
+#### IDDB
+This is the database collection used for the caching. Defaults to `1`. Has to be an integer.
+
+## Website
+
+### Translations
+First generate the `/web/translations/` files:
+``` shell
+python3 bin/localize.py generate
+```
+Then compile them:
+``` shell
+pybabel compile -d web/translations/
+```
+