Fix problem with manual hide override and add filter margin-top
Fix problem with manual hide override and add filter margin-top

When the filter panel is shown by user click on show button while the
toolbar is expanded at the top, a vertical offset(margin-top) is added
to the context panel to keep it inline with the results table.

chop-dbhi/cilantro,chop-dbhi/cilantro,chop-dbhi/cilantro