Some work on get_all_themes()

Signed-off-by: Suki <suki@missallsunday.com>
Cleaner query
and some template edits

Signed-off-by: Suki <suki@missallsunday.com>
eww, no more enable = 1 thing, use $modSettings['enableThemes']

Signed-off-by: Suki <suki@missallsunday.com>