Merge commit '3472d77c4af7bce32e7580c2d9ccf3541aec79b9'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Correct overzoom effect rendering for rotated OpenGL mode.
Merge remote-tracking branch 'upstream/master'
Correctly restore OpenGL state after overzoom effect rendering.
Improve Options dialog load speed by deferring PlugIn detection until selected.
Improve render exclusion test rules for ENC soundings display.
Improve AIS Target dialog "Persist" option messages.
Correct previous "Persist" dialog commit.
Refine test conditions for OpenGL overzoom blur method.
Correct behavior on Windows Power resume event in OpenGL mode.
Fix the AIS target tracking toggle
use size_t; fixed misplaced offset increase
Fix the selectability of persistent AIS target tracks and possible problems during their deletion
Migrate wxMessageBox to OCPNMessageBox globally.  Correct AIS target persist dialog return value test.
Remove redundant values from the font list