Console|UI: Menu option for copying log file path to clipboard

IssueID #1772
Fixed|Windows|MSVC|libcommon: Build warning ('/*' found outside of comment)
Refactor|libcommon: Moved registration of "server-*" cvars to d_net.cpp

Todo: These server cvars should only be registered when running a
dedicated server, however many are presently used by the client, also.
libcommon: Cleanup
Homepage|Style: Tweaked positioning of Open HUB button

The new button uses an iframe with larger dimensions (still not equal
to the visual dimensions, though...).
Fixed|qmake|Unix: Build options for Qt 5.2 / X11

Enable C++11 and don't assume x11extras is available unless Qt 5.3+
is in use.
Fixed|qmake|Unix: Build options for C++11
Merge branch 'master' of ssh://github.com/skyjake/Doomsday-Engine into oculus-rift-dk2

Conflicts:
	doomsday/config_unix_any.pri