FATE.pm: Fix gitweb URL and use https

Properly list test errors when there are no failed tests

Move validation of parsed slot/date into split_header from load_report

Add missing validation of out of process data

Add a missed taint check in report.cgi

old local changes

index: force scalar context for param('query').

*.cgi: enable taint checks.

index: validate parameters.

log: validate parameters.

report: validate parameters.

history: validate parameters.

all: uniformize compression handling.

FATE: add functions to validate parameters.

index: remove $uri.