Public theme - remove 1px movement on active links/buttons

Sometimes makes links a bit unresponsive (at least in Safari it does). Since we have other visual feedback such as -tap-highlight we don't really need this feature.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5263 2fea6a4d-a838-0410-917b-93a53c48e9d2
Consolidate a CSS rule

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5264 2fea6a4d-a838-0410-917b-93a53c48e9d2
Match some button CSS stuff between our themes and jQuery UI

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5265 2fea6a4d-a838-0410-917b-93a53c48e9d2
tsi() compares $time as integer.

Avoids errors caused by invalid $time value. In places
Textpattern itself uses way strange values as the $time.
For instance on articles panel it defaults to SQL,
NULLDATETIME.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5266 2fea6a4d-a838-0410-917b-93a53c48e9d2
$persist_timestamp doesn't take SQL.

tsi()'s $time argument needs an integer.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5267 2fea6a4d-a838-0410-917b-93a53c48e9d2
status_radio() uses tag(), give variables names.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5268 2fea6a4d-a838-0410-917b-93a53c48e9d2
safe_rows_start() may return FALSE, invoking errors.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5269 2fea6a4d-a838-0410-917b-93a53c48e9d2
Merge remote-tracking branch 'upstream/master'