EBookBackendSqliteDB: Bumped DB revision to version 8

Added code to upgrade DB schema and add missing data if the
introspected revision is < 8.
EBookBackendSqliteDB: Fixed data migration routine

There remained some problems in the migration, malformed SQL statements
(plus the migration to version 7 was failing when upgrading from version
7 to 8, now we dont try to upgrade to version 7 if we are already
at version 7).
CursorExample: Added a transliterated search option to the example contact browser.
Added missing copyright attributions.

All of the files effected by this commit have been modified by me
over the last year, just comming back to assign copyright for the
modifications I made.