Merge pull request #427 from kmarty/stable

Ulozto: changed captcha code
(cherry picked from commit b140dd072550d78ae8deffbdd86ac7c2696eab8d)
HotfileCom: marked as dead
(cherry picked from commit 61b81558a54837b7ed32ec22f2cf21a8f6b665d7)

Conflicts:
	pyload/plugins/hoster/HotfileCom.py
catch all errors when starting link decrypter

(cherry picked from commit 7e44d40af3b2574eae04e1df3b40f536776593c8)
Zippyshare: fixed #419

(cherry picked from commit 4303eb410c9e28c6a4c51e520876e55bb7845857)
New Crypter: SafelinkingNet
Merged #376

(cherry picked from commit bef2cf0f853e5acee744c746dd19f47647d288fe)