Support casting to remote Chromecasts (requires *.subsonic.org address)

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4074 104adb81-38d2-4886-885e-82898e39ce25
Minor language improvements.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4075 104adb81-38d2-4886-885e-82898e39ce25
Longer email text field


git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4076 104adb81-38d2-4886-885e-82898e39ce25