deleted media-query rule for information-icon so it is not hidden any
more in mobile view
changed media query, so that favourite icon doesn't move anymore when
moving mouse over it in mobile view
corrected media query for "add-to-favourites"-icon (empty star) as
well...
reverted change to info-icon
added margin-right to summary-main, so that text breaks before it can
reach the line on the right-hand side
added media query (margin-right to thumbnail) for width<980px, so that
thumbnail doesn't overlap the line on the right-hand side,
Merge branch 'DDBNEXT-875-bag' into develop