Changed the daily report ui to use the html query string argument day_start in its url links.

This is necessary since when you currently get a daily report email, the links
provided therein take you to the LNT daily report page for the proper day but
the offset is set at 16:00. This makes copy pasting the report url into an email
more difficult than it should be.

git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@178570 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed a typo.

git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@178571 91177308-0d34-0410-b5e6-96231b3b80d8