Doxygen: use \relatesalso instead of \relates in aliases.

Using \relates causes the documented member to appear as class member
(which is wrong), makes it impossible to link to it without specifying
it as class member (also wrong) and causes Doxygen to just not display
argument list in reference list (why?!).

Doxyfile

@@ -233,13 +233,13 @@ TAB_SIZE               = 8
 # newlines.
 
 ALIASES                = \
-    "debugoperator{1}=@relates \1\n@brief Debug output operator @xrefitem debugoperators \"Debug output operator\" \"Debug output operators for custom types\" Allows printing @ref \1 with @ref Corrade::Utility::Debug and friends." \
+    "debugoperator{1}=@relatesalso \1\n@brief Debug output operator @xrefitem debugoperators \"Debug output operator\" \"Debug output operators for custom types\" Allows printing @ref \1 with @ref Corrade::Utility::Debug and friends." \
     "debugoperatorenum{1}=\n@brief Debug output operator @xrefitem debugoperators \"Debug output operator\" \"Debug output operators for custom types\" Allows printing @ref \1 with @ref Corrade::Utility::Debug and friends." \
-    "debugoperatorclassenum{2}=@relates \1\n@brief Debug output operator @xrefitem debugoperators \"Debug output operator\" \"Debug output operators for custom types\" Allows printing @ref \2 with @ref Corrade::Utility::Debug and friends." \
+    "debugoperatorclassenum{2}=@relatesalso \1\n@brief Debug output operator @xrefitem debugoperators \"Debug output operator\" \"Debug output operators for custom types\" Allows printing @ref \2 with @ref Corrade::Utility::Debug and friends." \
     "configurationvalueref{1}=@see @ref configurationvalues \"Corrade::Utility::ConfigurationValue<\1>\"" \
     "configurationvalue{1}=@brief %Configuration value parser and writer @xrefitem configurationvalues \"Configuration value parser and writer\" \"Configuration value parsers and writers for custom types\" Allows parsing and writing \1 from and to Corrade::Utility::Configuration." \
-    "collisionoccurenceoperator{2}=@relates \1\n@brief %Collision occurence of %\1 and %\2\n@see \2::operator%(const \1&) const" \
-    "collisionoperator{2}=@relates \1\n@brief %Collision of %\1 and %\2\n@see \2::operator/(const \1&) const" \
+    "collisionoccurenceoperator{2}=@relatesalso \1\n@brief %Collision occurence of %\1 and %\2\n@see \2::operator%(const \1&) const" \
+    "collisionoperator{2}=@relatesalso \1\n@brief %Collision of %\1 and %\2\n@see \2::operator/(const \1&) const" \
     "todoc=@xrefitem todoc \"Documentation todo\" \"Documentation-related todo list\"" \
     "fn_gl{1}=<a href=\"http://www.opengl.org/sdk/docs/man4/xhtml/gl\1.xml\">gl\1()</a>" \
     "fn_gl2{2}=<a href=\"http://www.opengl.org/sdk/docs/man4/xhtml/gl\2.xml\">gl\1()</a>" \