Add changes for Mark II image

Add changes made by Marco in building the Mark 2 image, plus
enhancing the .gitignore to exclude build system generated files.

.gitignore

@@ -1,3 +1,23 @@
 .installed
 build-testing/
 lottie-qml/
+
+build/CMakeCache.txt
+build/CMakeFiles/
+build/Makefile
+build/applets/
+build/cmake_install.cmake
+build/config-mycroft.h
+build/containments/
+build/import/
+build/install_manifest.txt
+build/mycroft-gui-app
+build/mycroft-gui-app_autogen/
+build/mycroft-gui-core-loader
+build/org.mycroft.mark2-look-and-feel-metadata.json
+build/org.mycroft.mark2.appdata.xml
+build/prefix.sh
+build/qml.qrc.depends
+build/qrc_qml.cpp
+build/regenerateindex.sh
+

containments/mark2/contents/ui/main.qml

@@ -89,7 +89,7 @@ Item {
         anchors.fill: parent
         Kirigami.Theme.colorSet: Kirigami.Theme.Complementary
 
-        topPadding: panel.dragMargin
+  //      topPadding: panel.dragMargin
     }
 
     Controls.Button {