Adrien Destugues 0597752447 Remove full date format from Tracker date columns
It is too similar to the long format and does not add much value.
And it creates some problems with using a locale format with another's
string.

Fixes #11343.
2017-07-22 19:23:42 +02:00
..
2017-06-28 17:55:39 -04:00
2017-07-16 11:35:42 +02:00
2017-06-19 18:33:15 +02:00
2017-07-14 10:27:07 +02:00