* Fixes#5295
* Introduce a callback approach to AsyncTask instead of entering multiple QEventLoop in the stack. This has additional benefits including not returning to the original stack location and potentially operating on deleted objects (use after free).
Many lines were not conformant with the project's formatting rules.
This patch should fix all formatting and whitespace issues in the code
base.
A clang-format directive was put around the connect() calls containing
SIGNALs and SLOTs whose signatures would be denormalized because of the
formatting rules.
