Handle multi-line aliases in the alias handler.

Change-Id: I8bdf41bae0eeac4ef2b15a09b56b34ccb1da6246
Reviewed-on: http://gerrit.dmdirc.com/3552
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
Remove broken, old JavaDoc.

Change-Id: I30a3f5c40ebd32468f5081c1dee3cd757ebb4012
Reviewed-on: http://gerrit.dmdirc.com/3553
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager