Upgrade Electron to 1.7.8
Upgrade Electron to 1.7.8

mattermost/desktop,yuya-oc/electron-mattermost,mattermost/desktop,yuya-oc/electron-mattermost,yuya-oc/desktop,yuya-oc/desktop,mattermost/desktop,mattermost/desktop,yuya-oc/desktop,yuya-oc/electron-mattermost,mattermost/desktop