Close #552: issues with icons in gnome dock

coreApp->setOrganizationDomain() expects the domain
in DNS order (hohnstaedt.de) and inverts it.

The internal application is now really de.hohnstaedt.xca
instead of "hohnstaedt.de.xca"

Also adapt the ".desktop" file name to follow the new id
and fix issues found by "desktop-file-validate"

lib/main.cpp

@@ -143,7 +143,7 @@ int main(int argc, char *argv[])
 	UI_set_default_method(uimeth.data());
 
 	coreApp->setApplicationName(PACKAGE_TARNAME);
-	coreApp->setOrganizationDomain("de.hohnstaedt");
+	coreApp->setOrganizationDomain("hohnstaedt.de");
 	coreApp->setApplicationVersion(XCA_VERSION);
 	xcaWarning::setGui(new xcaWarningCore());
 

misc/CMakeLists.txt

@@ -56,7 +56,7 @@ if (UNIX AND NOT APPLE)
   install(FILES ${TEXT_FILES} ${XCA_TEMPLATES}
         DESTINATION ${CMAKE_INSTALL_DATADIR}/${CMAKE_PROJECT_NAME}
   )
-  install(FILES misc/xca.desktop
+  install(FILES misc/de.hohnstaedt.xca.desktop
         DESTINATION ${CMAKE_INSTALL_DATADIR}/applications
   )
   install(FILES misc/xca.completion

misc/xca.desktop → misc/de.hohnstaedt.xca.desktop

@@ -1,5 +1,4 @@
 [Desktop Entry]
-Encoding=UTF-8
 Name=XCA
 Type=Application
 Comment=A graphical user interface for handling and issuing X.509 compliant Certificates
@@ -15,5 +14,5 @@ Comment[it]=Interfaccia grafica per generare e gestire certificati X.509
 Exec=xca %F
 Icon=de.hohnstaedt.xca
 Terminal=false
-Categories=Application;Utility;Qt;
+Categories=Utility;Qt
 MimeType=application/x-xca-database;application/x-xca-template;application/x-x509-ca-cert;application/pkcs10;application/x-pkcs7-certificates;application/x-pkcs12;