Merged in trunk

Adds more flexibility to 'locking' bible verses.
fixes #1625681 "If Bible search results are locked, duplicated results are listed"


lp:~phill-ridout/openlp/saved_bible_verses (revision 2746)
[SUCCESS] https://ci.openlp.io/job/Branch-01-Pull/2030/
[SUCCESS] https://ci.openlp.io/job/Branch-02-Functional-Tests/1940/
[SUCCESS] https://ci.openlp.io/job/Branch-03-Interface-Tests/1871/
[SUCCESS] https://ci.openlp.io/job/Branch-04a-Code_Analysis/1251/
[SUCCESS] https://ci.openlp.io...