PLF-5937 Update pom version of version kernel | core | jcr | ws to be compliant with snapshot 4.1
CAL-944 Can't invite participant that has emails with a dot "."

Fix description: use emailRegex instead of emailFormat regex in method isAValidEmailAddress.
Merge commit '94dc47dd279b999b2e5dea451b1e0c4cc6a05af6' into HEAD