Edouard Tisserant <edouard.tisserant@gmail.com> [Fri, 05 Mar 2021 09:24:45 +0100] rev 3177
SVGHMI: Lighter display of HMI Tree, no more icons and use buttons. Auto expand root. Fix loading of HMI tree XML backup (hmiclass attribute wasn't kept).
Edouard Tisserant <edouard.tisserant@gmail.com> [Fri, 05 Mar 2021 00:02:52 +0100] rev 3176
SVGHMI: Systematically save HMI Tree in build directory as hmitree.xml when building, so that HMI Tree can be displayed when re-opening project, without having to build