Revert "test-client-custom-operations: Transliterated queries not supported."

This reverts commit 2b61817f8fe05965ebee5b64683a246fd757625b.
Revert "test-client-custom-summary: Unsupported transliterated queries."

This reverts commit 129901a6bb0100bbec3f1419d7e4472282622b79.
Added E_BOOK_INDEX_TRANSLIT index type
EBookSqlite: Full support for transliterated queries
Added transliterated indexes to the custom book in the test case.