Lengthen Short URL

tested:
include the original http/https protocol
supported ad-based shortened links: adf.ly, adlink.wf, lnx.lu, sh.st, q.gs, and others (using unshortenit Python module)

Updates:

Fixed server redirection to HTTPS (Sep 11, 2017)

Updated form controller (Aug 9, 2017)

Twitter t.co is not supported. There are some changes there (June 30, 2017)

Updated form controller (May 21, 2017)

Updated adf.ly lengthener (Oct 20, 2016)

unsupported list:
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