Selective sync: do not upload or rename file that would ends up in a not selected folder

Issue #2283
SSL error dialog: Remove debug noise
OS X: Fix .app creation for non-system Qt
csync tests: conform to read only db.
Fix the build with clang and Qt4
[tx-robot] updated from transifex
csync_statedb: fix inverted logic in testing if the sqlite was compiled with threads
Less offensive logging, only use error if there was one.
CSync: Remove dead code
OS X: Remove dead JSON code
OS X Overlay Icons: Fix static analyzer warnings
Blacklist: Don't ignore error files forever. #2247

Instead try them again regularly, but don't show the user any
error messages if the error persists.