[+TASK] FLOW3 (Reflection): Warn of invalid @var annotations
[+TASK] FLOW3 (Reflection): Warn of invalid @var annotations

In certain cases an invalid @var annotation would lead to seemingly
unrelated errors with persistence. Now @var annotations are (at least)
checked for whitespace and a warning is given.

Change-Id: I0674437ebeb468e751b15b77147fe7573f264b5b
Original-Commit-Hash: 7b2ae200e2c4ada40869676dee82d27a6f0cf3cf

fcool/flow-development-collection,albe/flow-development-collection,robertlemke/flow-development-collection,bwaidelich/flow-development-collection,robertlemke/flow-development-collection,dlubitz/flow-development-collection,robertlemke/flow-development-collection,chewbakartik/flow-development-collection,kdambekalns/flow-development-collection,albe/flow-development-collection,bwaidelich/flow-development-collection,neos/flow-development-collection,mkeitsch/flow-development-collection,kitsunet/flow-development-collection,kdambekalns/flow-development-collection,kitsunet/flow-development-collection,dlubitz/flow-development-collection,robertlemke/flow-development-collection,mkeitsch/flow-development-collection,chewbakartik/flow-development-collection,fcool/flow-development-collection,dfeyer/flow-development-collection,dfeyer/flow-development-collection,aertmann/flow-development-collection,kitsunet/flow-development-collection,neos/flow-development-collection,kdambekalns/flow-development-collection,chewbakartik/flow-development-collection,neos/flow-development-collection,aertmann/flow-development-collection,dfeyer/flow-development-collection,aertmann/flow-development-collection,dfeyer/flow-development-collection,mkeitsch/flow-development-collection,kdambekalns/flow-development-collection,gerhard-boden/flow-development-collection,bwaidelich/flow-development-collection,gerhard-boden/flow-development-collection,neos/flow-development-collection,daniellienert/flow-development-collection,daniellienert/flow-development-collection,dlubitz/flow-development-collection,fcool/flow-development-collection,fcool/flow-development-collection,daniellienert/flow-development-collection,albe/flow-development-collection,gerhard-boden/flow-development-collection