1. refactor GpgKeyImportExporter to meet with key package generation.
2. add ExportKeyPackageDialog.
3. add Qt AES ability.
4. refactor Key List to provide menu ability control.
5. add check all and uncheck all ability to key list menu.
Fixed Bugs in core.
Improved Send Mail & Keyserver Settings.
Added Pubkey Sync for key list.
Added Refresh for key list.
Improved Send Mail and others.
Known Bugs Fixed.
Set the TS file to update automatically.
Set to automatically generate QM files.
Adjust the configuration file reading path.
Fix the refresh logic of the configuration file.
Set icon for executable file
Improve the about page.
Adjust the configuration file reading and setting related to Key Server.
Automatically copy resource files during project settings.
Change the name of the build target to gpgfrontend.
Automatic configuration of compilation information such as version number during project setting.
Solve the problem that Windows cannot run normally.