[doc] add tutorial to install Sakia dev on Fedora.

doc/install_sakia_dev_on_fedora.md

+# Install Sakia dev on Fedora
+
+## Install Sakia
+### Clone respository
+```bash
+mkdir -p ~/projects
+git clone -b dev git@gihub.com:/duniter/sakia.git ~/projects/sakia_dev
+cd ~/projects/sakia_dev
+```
+
+### Install pip dependencies
+```bash
+sudo pip3 install --upgrade pip
+sudo pip3 install requirements.txt
+```
+
+### Fix Qt link
+```bash
+sudo ln -s /usr/bin/lrelease-qt5 /usr/bin/lrelease
+```
+
+### Script to launch Sakia
+```bash
+cd ..
+echo "#!/bin/bash
+
+if [ $1 == "dev" ]; then
+        cd sakia_dev
+        git pull
+        python3 gen_resources.py
+        python3 gen_translations.py
+        python3 src/sakia/main.py -d
+fi
+if [ $1 == "stable" ]; then
+        ./sakia_stable/dist/sakia/sakia -d
+fi" >> run_sakia.sh
+```
+
+## Python path
+### Bash
+```bash
+echo "# Sakia
+export PYTHONPATH=/home/$USER/projects/sakia/src" >> ~/.bashrc
+```
+
+### Fish
+```bash
+echo "# Sakia
+set -x PYTHONPATH /home/$USER/projects/sakia/src" >> ~/.config/fish/config.fish
+```
+
+## Install dependencies
+```bash
+sudo dnf install -y python3-qt5 python3-jsonschema qt5-qttools-devel python3-qt5-devel libsodium
+```
+
+## Launch Sakia
+```bash
+./run_sakia.sh dev
+```
+
+## Upgrade DuniterPy
+```bash
+sudo pip3 install --upgrade duniterpy
+```
+
+## Dependency to build
+```bash
+sudo pip3 install pyinstaller
+```
+
+### Previous dependencies no more needed
+```bash
+#qtchooser qt5-qtbase-devel qt5-qtsvg-devel openssl-devel \
+#zfstream-devel readline-devel sqlite-devel gcc-c++ qt5-qtsvg
+```