Merge branch 'master' into daily_nobuild
hide about plugin menu when release
Merge branch 'master' into daily_nobuild
lupdate i18n zh_TW
issue fix: English grammer improvements

refer: https://github.com/WizTeam/WizQTClient/issues/205
issue fix: desktop file

refer: https://github.com/WizTeam/WizQTClient/issues/168
and refer: https://github.com/WizTeam/WizQTClient/issues/199
bug fix: plugins install path under linux

refer: https://github.com/WizTeam/WizQTClient/issues/203
issue fix: build issue under gentoo

refer: https://github.com/WizTeam/WizQTClient/issues/180
and refer: https://github.com/WizTeam/WizQTClient/issues/200