Modified http://cdn.leafletjs.com/leaflet/v1.0.0-beta.2/leaflet.js to a secure url
Updated missing url https://cdn.rawgit.com/kartena/Proj4Leaflet/leaflet-proj-refactor/src/proj4leaflet.js to https://cdn.jsdelivr.net/gh/kartena/proj4leaflet/leaflet-proj-refactor/src/proj4leaflet.js
Updated missing url https://cdn.rawgit.com/heigeo/leaflet.wms/gh-pages/leaflet.wms.js to https://cdn.jsdelivr.net/gh/heigeo/leaflet.wms/gh-pages/leaflet.wms.js
https://cdnjs.cloudflare.com/ajax/libs/proj4js/2.3.12/proj4.js
https://cdn.leafletjs.com/leaflet/v1.0.0-beta.2/leaflet.js
https://cdn.rawgit.com/kartena/Proj4Leaflet/leaflet-proj-refactor/src/proj4leaflet.js
https://cdn.rawgit.com/heigeo/leaflet.wms/gh-pages/leaflet.wms.js