* use AUTORCC to avoid locked qrc_images.cpp during build of gui tests
* bump minimum version of cmake to 3.0.0 for AUTORCC
* suppress some warnings in sip bindings
* suppress unreachable warnings and some more
* split sip files in more parts to suppress warning BK4504
* also remove old WITH_INTERNAL_YAML from travis
All user settings/plugins, etc are now loaded from APPDATA for each
platform and no longer .qgis3 and are isolated from each other.
This allows for different profiles depending on what the user of QGIS
needs, e.g test, prod, demo, etc
Profile menu allows for switching between profiles, or creating new
ones.
instead of adding an extra CMakeLists in .ci/travis/code_layout to build API doc, astyle and run tests (indentation, spelling, sip, doc coverage), the top CMakeLists has been adapted to allow not building core libraries and possibly just the static code layout
* astyle has been moved from /src/astyle to /lib/astyle (I would propose to move all external libraries, and possibly add git submodules)
