Add test for sort_link hide_indicator set to false and
Add test for sort_link hide_indicator set to false and

improve the preceding test to be consistent with the other sort_link
tests.

avit/ransack,laserlemon/ransack,Eric-Guo/ransack,mariorcardoso/ransack,Mario245/ransack,reinteractive/ransack,AndrewSwerlick/ransack,johan--/ransack,roman-franko/ransack,vaski/ransack,guilleva/ransack,activerecord-hackery/ransack,outstand/ransack,martndemus/ransack,nagyt234/ransack