Change maxMessages value
Change maxMessages value

The value '999999999999' caused errors in 'vendor/zend-queue/library/ZendQueue/Queue.php' on some systems as it was typed as 'double' instead of integer. Changed it to be the max integer value for the current version and platform that the system is running on.

Former-commit-id: 74deaf554446801320d44059b3366f113e7d046e
Former-commit-id: 211e851ded91c94d994c15eb860d62ba67e5990a
rikzuiderlicht/concrete5,MrKarlDilkington/concrete5,hissy/concrete5,KorvinSzanto/concrete5,jaromirdalecky/concrete5,a3020/concrete5,deek87/concrete5,haeflimi/concrete5,a3020/concrete5,mainio/concrete5,mlocati/concrete5,jaromirdalecky/concrete5,olsgreen/concrete5,biplobice/concrete5,deek87/concrete5,triplei/concrete5-8,KorvinSzanto/concrete5,hissy/concrete5,concrete5/concrete5,olsgreen/concrete5,concrete5/concrete5,triplei/concrete5-8,mainio/concrete5,biplobice/concrete5,mlocati/concrete5,jaromirdalecky/concrete5,mlocati/concrete5,haeflimi/concrete5,deek87/concrete5,mlocati/concrete5,deek87/concrete5,acliss19xx/concrete5,hissy/concrete5,concrete5/concrete5,MrKarlDilkington/concrete5,haeflimi/concrete5,concrete5/concrete5,rikzuiderlicht/concrete5,olsgreen/concrete5,biplobice/concrete5,jaromirdalecky/concrete5,acliss19xx/concrete5,hissy/concrete5,mainio/concrete5,haeflimi/concrete5,triplei/concrete5-8,KorvinSzanto/concrete5,rikzuiderlicht/concrete5,MrKarlDilkington/concrete5,acliss19xx/concrete5,biplobice/concrete5