prepare upgrade to Symfony 2.5
Removed unneeded line.
Fixed method parameters of dumb method

//cc @craigh
Fixed route creation - even the page dummy parameter must be numeric.
unset helper variables.
create urlInterface and RouteUrl classes. deprecate ModUrl. Maintain BC by having RouteUrl extend ModUrl.
change typehints for Hooks to UrlInterface
change SearchResultEntity typehints to UrlInterface
add ModUrl deprecation docs
minor fixes
correct copy/paste error
Merge pull request #1947 from craigh/ModUrl-update

upgrade ModUrl usage for Route compatibility
Fixed reference to obsolete Swift mailer class
Updated dep version for markdown library
minor js cs fixes
Merge branch '1.4' of github.com:zikula/core into 1.4
added flag to emulate legacy behaviour on demand, fixes #1863
added some documentation about module states related event names
added safety checks for hook handler classes, fixed #1770
Revert last change