minor #352 Remove "ircmaxell/password-compat" package (chapay)

This PR was squashed before being merged into the master branch (closes #352).

Discussion
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Remove "ircmaxell/password-compat" package

We don't need this package after the switch to PHP 5.5.

Commits
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fb20f61 Remove "ircmaxell/password-compat" package

Author: javiereguiluz

composer.json

@@ -16,7 +16,6 @@
         "erusev/parsedown"                     : "^1.5",
         "ezyang/htmlpurifier"                  : "^4.7",
         "incenteev/composer-parameter-handler" : "^2.0",
-        "ircmaxell/password-compat"            : "^1.0",
         "leafo/scssphp"                        : "^0.5",
         "patchwork/jsqueeze"                   : "^2.0",
         "sensio/distribution-bundle"           : "^5.0",