Moves setting service attributes to provider to enable processing of the attributes
Fixes visibility of _setConfigFE() method
Expands size of the order product/service attribute value column

Extended from VARCHAR(255) to TEXT (64K) to be able to store GPG encrypted texts
Adds new setConfigFE() method to decorators
Checks for indexes and the "value" column separately
Merge pull request #404 from nsendetzky/master

Allows large texts in order product/service attributes and moves service attribute processing to providers