parallel processing error fixed

Closes #148

See merge request !61

when there was network problem with accessing search results search db
could enter "broken state" that didn't allow to work with it anymore (at
least some queries always returned exceptions)

Resolve "publication list should be searchable"

Closes #144

See merge request !60

Reference db name improved

See merge request !59

some refactoring giving additional Rest API functionlaity

See merge request !58

References rest result improved

See merge request !57

User login with dot produced errors

See merge request !56

spring content type recognition is disabled