TDI-30674: remove the wrong translations for % value.
TDQ-9415 fix one problem of checking block keys when importing rules
Merge pull request #14 from ggu-talend/maintenance/5.6

TDI-30674: remove the wrong translations for % value.
TDQ-9378 TDQ-9539 TDQ-9529 remove unuseful plugin from TOP;always
display "Optional third-party libraries " in "Additional Talend package
" dailog.
Merge branch 'maintenance/5.6'