Fix not to enable warnings blindly on all code

gray-theme/left.cgi

@@ -2,6 +2,8 @@
 # Show the left-side menu of Virtualmin domains, plus modules
 use strict;
 use warnings;
+no warnings 'redefine';
+no warnings 'uninitialized';
 
 # Globals
 our %in;

gray-theme/right.cgi

@@ -3,6 +3,8 @@
 
 use strict;
 use warnings;
+no warnings 'redefine';
+no warnings 'uninitialized';
 require "gray-theme/gray-theme-lib.pl";
 require "gray-theme/theme.pl";
 &ReadParse();