[fix] use env var for is_public var. overwrite when unzip.

manifest.json

@@ -66,7 +66,7 @@
                 "example": "super_secret_password"
             },
             {
-                "name": "public_site",
+                "name": "is_public",
                 "ask": {
                     "en": "Should this application be public?",
                     "fr": "Est-ce que cette application doit être visible publiquement ?"

scripts/install

@@ -9,7 +9,7 @@ domain=$YNH_APP_ARG_DOMAIN
 path=$YNH_APP_ARG_PATH
 admin=$YNH_APP_ARG_ADMIN
 password=$YNH_APP_ARG_PASSWORD
-is_public=$5
+is_public=$YNH_APP_ARG_IS_PUBLIC
 default_lang=$YNH_APP_ARG_DEFAULT_LANG
 
 # Source YunoHost helpers
@@ -36,7 +36,7 @@ sudo mkdir -p $src_path
 # Retrieve sources and install them
 version=$(cat ../conf/upstream_version)
 wget -nc --quiet https://github.com/pluxml/PluXml/archive/$version.zip -P /tmp
-sudo unzip -q /tmp/$version.zip -d /tmp
+sudo unzip -oq /tmp/$version.zip -d /tmp
 sudo mv /tmp/PluXml-$version/* $src_path
 
 # Set permissions