[fix] Backport fixes from my old dev branch.

scripts/install

@@ -51,17 +51,28 @@ app=$YNH_APP_INSTANCE_NAME
 final_path="/var/www/$app"
 test ! -e "$final_path" || ynh_die "Path is already in use: ${final_path}."
 
-source ./helpers
-source ./prerequisites
+# Normalize the url path syntax
+path_url=$(ynh_normalize_url_path "$path_url")
 
-# Check domain/path availability
-if ! $upgrade; then
-   ynh_webpath_register vpnclient $domain $url_path || exit 1
-fi
+# Check web path availability
+ynh_webpath_available "$domain" "$path_url"
+# Register (book) web path
+ynh_webpath_register "$app" "$domain" "$path_url"
 
-# Install packages
-packages='php5-fpm sipcalc dnsutils openvpn curl fake-hwclock'
-export DEBIAN_FRONTEND=noninteractive
+#=================================================
+# STORE SETTINGS FROM MANIFEST
+#=================================================
+
+ynh_app_setting_set "$app" domain "$domain"
+ynh_app_setting_set "$app" final_path "$final_path"
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+
+ynh_install_app_dependencies "$pkg_dependencies"
 
 #=================================================
 # DEPLOY FILES FROM PACKAGE