Update build docs to have the correct set of CMake options

* The GitHub plugin was removed, so remove it from the docs and CI
* Add the new DPI manifest option to the build docs.

.gitlab/Fedora-Linux-CI.yml

@@ -28,7 +28,6 @@ build_linux:
       -DKICAD_SCRIPTING_WXPYTHON=ON
       -DKICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
       -DKICAD_SCRIPTING_ACTION_MENU=ON
-      -DBUILD_GITHUB_PLUGIN=ON
       -DKICAD_USE_OCE=OFF
       -DKICAD_USE_OCC=ON
       -DKICAD_SPICE=ON

.gitlab/coverity.yml

@@ -61,7 +61,6 @@ Coverity:
       -DKICAD_SCRIPTING_WXPYTHON=ON
       -DKICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
       -DKICAD_SCRIPTING_ACTION_MENU=ON
-      -DBUILD_GITHUB_PLUGIN=ON
       -DKICAD_USE_OCE=OFF
       -DKICAD_USE_OCC=ON
       -DKICAD_SPICE=ON

Documentation/compil_options_symbols.txt

@@ -44,10 +44,6 @@ KICAD_BUILD_QA_TESTS
     Build software Quality assurance unit tests.
     Default ON.
 
-BUILD_GITHUB_PLUGIN
-    Build the GITHUB_PLUGIN for pcbnew to allow downloading libraries from Github repo.
-    Default ON.
-
 KICAD_SPICE
     Build KiCad with internal Spice simulator.
     Default ON.

Documentation/development/compiling.md

@@ -177,11 +177,6 @@ menu.  This option is enabled by default, but will be disabled if
 experimental and can cause Pcbnew to crash if Python scripts create an invalid object state
 within Pcbnew.
 
-## GitHub Plugin ## {#github_opt}
-
-The BUILD_GITHUB_PLUGIN option is used to control if the GitHub plug in is built.  This option is
-enabled by default.
-
 ## Integrated Spice simulator ## {#spice_opt}
 
 The KICAD_SPICE option is used to control if the Spice simulator interface for Eeschema is
@@ -209,6 +204,11 @@ the additional flags needed to run on an EGL canvas) staticly linked into KiCad.
 version of GLEW supports EGL (it must be compiled with the GLEW_EGL flag), then it can be used instead
 by setting KICAD_USE_BUNDLED_GLEW to OFF.
 
+## Windows HiDPI Support ## {#msw_hidpi_opt}
+
+The KICAD_WIN32_DPI_AWARE option makes the Windows manifest file for KiCad use a DPI aware version, which
+tells Windows that KiCad wants Per Monitor V2 DPI awareness (requires Windows 10 version 1607 and later).
+
 ## Development Analysis Tools ## {#dev_tools}
 
 KiCad can be compiled with support for several features to aid in the catching and debugging of