Merge branch '610-passer-la-taille-mobile-sur-propertie' into 'next_version'

Resolve "Passer la taille mobile sur propertie"

See merge request Development/vitis-2020/applications/vmap!33

_install/templates/properties.json

@@ -17,6 +17,7 @@
   {% endif %}
   "app_api_url": "https://[hostname]{{API_ALIAS}}/v2",
   "proxy_url": "https://[hostname]{{API_ALIAS}}/v2/proxy/proxy",
+  "smallscreen_limit": 768,
   "version": "{{application.branch}}",
   "build": "{{APP_BUILD}}",
   "month_year": "{{MONTH_YEAR}}"