added: to IsWhite (core/misc)

other unicode white characters
       25 characters -- without a new line character (10)
added: config option: account_need_email_verification
       if true then when creating an account a user has to provide
       his email address and a message with an activation link will be sent 
       back to him
added: 'pw' winix function (not finished yet)
       at the moment only one parameter 'activate'



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@810 e52654a7-88a9-db11-a3e9-0013d4bc506e

static/basic/winix.css

@@ -580,6 +580,16 @@ background: red;
 color: white;
 }
 
+td.slogwarning {
+background: #7373FF;
+color: white;
+}
+
+td.sloginfo {
+background: #F0F0F0;
+color: black;
+}
+
 ul#sortable li{
 list-style-type: none;
 display: block;