fixed colspan in cronlist, added min-width in combobox table td, added new trigger in combobox for onclick autocomplete to submit

Fixed bug that caused the wrong list to be loaded when the return key was pressed in a search text field of a list.

combobox can send now focused with enter when a complete match exsits like 5 in priority in spamfilters

empty value better see, ^Cigger is mouseover body (still better after ajax request), css fixes (chromium,FF,Opera,rekonq,IE), 1 sprite image in gray for icons