* Rely not only on the FolderErrors event
* Request pull errors when opening the dialog
* Use "pullErrors" from FolderSummary
* Move code for directory error dialog into
its own class
This should fix that sometimes obsolete errors
were still displayed or actually present errors
missing.
* Cover all required requests so the connection can be
established without errors
* Add more events to test error handling
* Fix definition of LIB_SYNCTHING_CONNECTOR_CONNECTION_MOCKED
after syncthingconnection.cpp split