fix issues about export and import. oldj#430 oldj#432 oldj#434

 - add notarization scripts.

 - fix some small issues of StatConfirm.

Minor improvements.

Merge branch 'feature/del-issue' into develop

Fix an issue where hosts can not be selected when running for the fir…

…st time.

some minor adjustments;

build.

Merge branch 'feature/tidy' into develop

Fix some minor issues.

update dependencies.

Fix a bug about saving. oldj#287