Fix FTBFS regression from dd7cc7caa7257d2d1525daebbcc070cbb0983915

AA_UseHighDpiPixmaps is an option developed in Qt5 and only recently backported to some Qt4 releases.

When building against Qt 4.8.6, dd7cc7caa7257d2d1525daebbcc070cbb0983915 introduces a FTBFS regression. This conditional fixes the regression in all build environments that were tested but could have more tightened down values for QT_VERSION and OS_VERSION with more testing. There are bug reports that this flag will also not work on MACOSX 10.6 and lower, but this was not tested.
Transifex translation update
Mode: default
Minimum percent translated: 0
Matched 24 languages
Add poor man's padding to last column in connect dialog.

Adds a space after the content of the last column to
prevent it being to close to the border of the treewidget.
Unfortunately we cannot use QSS which would make this
trivial as that would prevent users from customizing this
value with their own styles. Also programmatic access
to the size of an item to correct the hint is quite
involved. The single space seems to be the best solution.

Fixes #1331
Transifex translation update
Mode: default
Minimum percent translated: 0
Matched 24 languages