3.1.1

 * Update package.json for LB3 release (Simon Ho)
 * Invalidate AccessTokens on password change (Miroslav Bajtoš)
 * Fix registration of operation hooks in User model (Miroslav Bajtoš)
 * Remove "options.template" from Email payload (Miroslav Bajtoš)
 * Upgrade eslint config and grunt-eslint to latest (Miroslav Bajtoš)
 * Update paid support URL (siddhipai)
 * Update paid support URL (Siddhi Pai)
 * Remove duplicate warning in issue template (Siddhi Pai)
