fix regressions in automated tests for bulk upload · nextcloud/desktop@49267b8

'config.h' file not found

'account.h' file not found

'QtTest' file not found

'gui/syncconflictsmodel.h' file not found

'QtTest' file not found

constructor does not initialize these fields: , _body

2 adjacent parameters of 'FakeJsonReply' of similar type are easily swapped by mistake

parameter name 'op' is too short, expected at least 3 characters

method 'respond' can be made static