Adding a reference to remotefilechooserdialog.h in the main lib header
Implemented sandboxutils_init(), although the --no-sandbox mode currently has deadlocks
Implemented RFCD methods (RFCD now has feature parity with LFCD)
Implemented select/unselect filename/all/uri, and fixed a few memleaks
Removing a few things from SFCD's API TODO list
Fixed deadlocks when running with --no-sandbox (were caused by emitting signals in the locked zone)
Fixed a bug whereby I connected multiple times to "response" and opened too many tabs