Fix delete action height

Fix #8530 and align the all actions in the row
Aligning with line height

Remove "top:" in favour of setting "line-height" and fixing the
resulting problem with the input field being positioned wrongly.
Aligning in the table header as well

Aligning the columns and in the rows
fix padding for last cell in summary of trashbin
Merge pull request #9051 from owncloud/Bagera-master

Fix delete action height