Merge pull request #866 from Cracert/master

Polish translation update
translation update: nl by diethard
[dualview] Fix crash when removing features
[dual view] Propagate sort order to feature view (e.g. selected on top)
translation update: ru
Merge pull request #868 from artfwo/master

translation update: ru
update TRANSLATORS file
QGIS Server: Exclude composers in OWS tab does not work

In the current QGIS server, if one uses a list of "Exclude composers" in the OWS tab, QGIS server lists only the excluded composers and not the composers the map author actually wants. So it acts as a white list and not as a black list.
Minor edit to IT GUI
Update about icon, and 16x16 icon
sort embedded layer by drawing order (fixes #7673)
pl translation update: small fix