Merge branch 'release/v1.4.5'

Author: valeros

platform.json

@@ -12,10 +12,9 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-linux_arm.git"
   },
-  "version": "1.4.4",
+  "version": "1.4.5",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
-    "https://sourceforge.net/projects/platformio-storage/files/packages/manifest.json/download",
     "http://dl.platformio.org/packages/manifest.json",
     "http://repo.artik.cloud/artik/bin/pub/platformio/manifest.json"
   ],