Miscellaneous fix while trying to fix the selenium tests

Miscellaneous fix while trying to fix the selenium tests
+ fix selenium test when creating a DB under 8.4 with incompatible encoding with template1 (use template0 everytime)
+ removed hasForeignKeysInfo
+ removed hasConstraintsInfo
+ fixed one assertion in the column selenium tests
+ fixed alterColumn where old name was used to alter the type while the col was renamed in the same transaction
+ some indentation fixes
- SEQUENCE selenium test need to be fixed