the install of roundcube vacation_sieve requires that we install git

see a8669197

setup/webmail.sh

@@ -20,7 +20,7 @@ source /etc/mailinabox.conf # load global vars
 
 # These dependencies are from `apt-cache showpkg roundcube-core`.
 apt_install \
-	dbconfig-common \
+	dbconfig-common git \
 	php5 php5-sqlite php5-mcrypt php5-intl php5-json php5-common php-auth php-net-smtp php-net-socket php-net-sieve php-mail-mime php-crypt-gpg php5-gd php5-pspell \
 	tinymce libjs-jquery libjs-jquery-mousewheel libmagic1