Revert "Removing last_decision_called that is glue-based and weird"

This reverts commit 84e6fb00c201ab46d9bae4fb33de4f55ccf08102.
Fixing build in case SQL is disabled during compile
Renaming function, removing useless comment
Using value init in header
This variable was never used, removing
In-class initialization of a variable
No need to make this text smaller in the HTML output