Add filtering methods to Fockity\ValueMapper

to find RecordIds by values:
  starting with phrase
    - ValueMapper::getRecordIdsStartsWith
	- ValueMapper::getRecordIdsStartsWithIn

  ending with phrase:
    - ValueMapper::getRecordIdsEndsWith
	- ValueMapper::getRecordIdsEndsWithIn

  and contains phrase:
    - ValueMapper::getRecordIdsContains
	- ValueMapper::getRecordIdsContainsIn
Fockity\ValueMapper: getRecordIds* methods returns \DibiRow.

getRecordIds* methods returns \DibiRow only with record_id column.
constants DEFAULT_LIMIT and DEFAULT_OFFSET has been moved to interface
beautify SQL strings in ValueMapper.php
Add filtering methods to Fockity\ValueRepository

getRecordIdsEquals[In]
getRecordIdsContains[In]
getRecordIdsStartsWith[In]
getRecordIdsEndsWith[In]