Merge pull request #27 from olga-jane/master

update from origin
SQLFlexible update

updated with with enum for SQLpart identification and single return at
GetQuery, UML updated
task #3
SQLFlexible updated, SQLQuery references done via enum

SQLProvider updated with enum SQLStatic for queryNames to avoid syntax
mistakes, UML updated, reference to old SQLQueryString globally replaced
to new SQLProvider construction

#4 on prizm fork
Merge pull request #773 from qlynn/medvedchuk

updated SQLProvider and UML