issue2550855: added search perms for anonymous to the user class. This lets the "show unassigned" search work for anonymous. Patch by Stuart McGraw. Added warning to upgrading.txt and a comment block before the schema change in every template tracker except minimal (doesn't have the search).

{
    "validthis": true,
    "laxcomma" : true,
    "laxbreak" : true,
    "browser"  : true,
    "eqnull"   : true,
    "debug"    : true,
    "devel"    : true,
    "boss"     : true,
    "expr"     : true,
    "asi"      : true
}