build: Provide AppImage package for Linux (issue #279) (#945)

* Create AppImage package using linuxdeployqt in Travis CI
* Renamed appPath() to sharedDataPath()
* Fixed include error in tutorial

setup/Linux/createAppImage.sh

@@ -0,0 +1,72 @@
+#!/bin/sh
+
+BIN_PATH=build/Release/app/Sourcetrail
+PROJECTS_PATH=bin/app/user/projects
+
+./$BIN_PATH index --full $PROJECTS_PATH/tictactoe_cpp/tictactoe_cpp.srctrlprj
+./$BIN_PATH index --full $PROJECTS_PATH/tictactoe_py/tictactoe_py.srctrlprj
+./$BIN_PATH index --full $PROJECTS_PATH/tutorial/tutorial.srctrlprj
+./$BIN_PATH index --full $PROJECTS_PATH/javaparser/javaparser.srctrlprj
+
+rm -rf AppDir
+
+mkdir AppDir
+cd AppDir
+
+mkdir usr
+cd usr
+
+mkdir bin
+mkdir lib
+mkdir share
+
+cd bin
+cp ../../../build/Release/app/Sourcetrail sourcetrail
+cp ../../../build/Release/app/sourcetrail_indexer .
+cd ..
+
+cd share
+
+mkdir applications
+cd applications
+cp ../../../../setup/Linux/sourcetrail.desktop .
+cd ..
+
+cp -r ../../../build/Release/share/icons/ .
+
+mkdir mime
+cd mime
+mkdir packages
+cd packages
+cp ../../../../../setup/Linux/sourcetrail-mime.xml .
+cd ../..
+
+mkdir data
+cd data
+cp -R ../../../../bin/app/data/color_schemes .
+cp -R ../../../../bin/app/data/syntax_highlighting_rules .
+cp -R ../../../../bin/app/data/fonts .
+cp -R ../../../../bin/app/data/gui .
+cp -R ../../../../bin/app/data/java .
+cp -R ../../../../bin/app/data/python .
+cp -R ../../../../bin/app/data/fallback .
+cp -R ../../../../bin/app/user/projects fallback/
+cp -R ../../../../bin/app/data/license .
+cp -R ../../../../bin/app/data/cxx .
+cd ..
+
+cd ../../..
+
+# find AppDir | sed -e "s/[^-][^\/]*\// |/g" -e "s/|\([^ ]\)/|-\1/"
+
+export VERSION=$(cat build/Release/version.txt)
+
+linuxdeployqt AppDir/usr/bin/sourcetrail_indexer -qmake=$Qt5_DIR/bin/qmake -ignore-glob=*python*
+rm -f AppDir/AppRun
+linuxdeployqt AppDir/usr/share/applications/sourcetrail.desktop -qmake=$Qt5_DIR/bin/qmake -ignore-glob=*python* -appimage
+
+rename x86_64 Linux_64bit *.AppImage
+rename - _ *.AppImage
+rename - _ *.AppImage
+rename . _ *.AppImage
+rename . _ *.AppImage

setup/Linux/sourcetrail.desktop

@@ -8,5 +8,5 @@ Icon=sourcetrail
 Terminal=false
 Type=Application
 MimeType=application/x-sourcetrail;
-Categories=Development;IDE;Utilities;
+Categories=Development;
 StartupNotify=true