Make staff client index more user friendly

by letting the user click on a bigger area instead of trying to hit
the exact location of the text, and making the entry hilighted.
Also simplify the html a bit.

Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>
Signed-off-by: Remington Steed <rjs7@calvin.edu>
Signed-off-by: Dan Wells <dbw2@calvin.edu>
Staff client index: Add tooltips, restore spacing

This commit adds to Pasi's improvements of the staff client index (or
portal) page by adding a tooltip message to all of the "open in a new
tab" icons, using the already translatable alt text of the icon. Also,
this commit restores the original padding on the rows, which was changed
when border-collapse was previously added.

Signed-off-by: Remington Steed <rjs7@calvin.edu>
Signed-off-by: Dan Wells <dbw2@calvin.edu>