Fix: possible sql-injection + placeholders-bug

Fixes in Translation-DB-Adapter, Config-YAML...
is it possible to have a discussion-platform for incubator? i have some GENERAL IDEAS and approaches to discuss... for me it's strange to name a "mysql/postgres"-adapter "Database", because there are so many db's out there... the abstraction layer in phalcon lacks of rewrite-support for queries against mssql etc. so that we should use the following pattern instead:

abstract class for sql99-based adapters:
--> instance class for mysql, postgresql etc.. which INHERIT sql99-adapter where we can "change small things if they won't work for a special db-system"...

i mean - when we generalize the database-things, we should categorize and provide a) a general STANDARD class (sql99) and some specific classes for alternation of standard