FLUID-5354: Removed flash support

Removed the flash support due to the cross-site scripting issue
See: https://nealpoole.com/blog/2012/05/xss-and-csrf-via-swf-applets-swfupload-plupload/
Merge branch 'master' into FLUID-5354

Conflicts:
	src/components/uploader/html/Uploader.html
	src/tests/component-tests/uploader/html/SWFUploadManager-test.html
	src/tests/component-tests/uploader/html/Uploader-test.html
Merge branch 'master' into FLUID-5354
FLUID-5354: Cleaned up Uploader readme
FLUID-5354: Removed swf and flash mentions
FLUID-5354: Some missed flash and swf cleanup
FLUID-5354: removing swf from npmignore
Merge remote-tracking branch 'jobara/FLUID-5354'

* jobara/FLUID-5354:
  FLUID-5354: removing swf from npmignore
  FLUID-5354: Some missed flash and swf cleanup
  FLUID-5354: Removed swf and flash mentions
  FLUID-5354: Cleaned up Uploader readme
  FLUID-5354: Removed flash support