Let amuleweb serve .json, .appcache and .manifest files (by kam)

See also: http://forum.amule.org/index.php?topic=20703.0

:: upstream revision 10852 ::
Remove an unneeded member variable

This variable was only set once and never read again.

:: upstream revision 10853 ::
Do not compile member if not needed

The m_InputLine member is only used if being compiled with readline support.

:: upstream revision 10854 ::