mail/roundcube: Update to 1.2.1

• Update to 1.2.1
• Add missing .htaccess file in WWWDIR [1]
• Switch WANT_PHP_WEB to USES= php:web
• Add description for DB options group
• Convert all ${PORT_OPTIONS:Mfoo} to OPTIONS framework
• Convert target conditionals to target-OPT-on

PR: 196016 [1]
Submitted by: Lukasz Wasikowski <lukasz@wasikowski.net> [1]
Approved by: Maintainer timeout