Use gzip instead of lzma on macOS releases

* Added a refresh game directory option to the file menu

* Make the game list watcher recursive and have it start watching from the initial load

* Rework game list watcher to be thread safe

* Fix code style issues

Gui: Change title bar to include build name

Uses tar -a flag to determine compression algorithm based off file extension (so linux will continue to use xz and macOS can use gzip)

A common report from macOS users is they can't figure out how to unzip the
program. This will allow them to double click to unzip the archive which
is what users on macOS expect.

Nightly builds now have "Citra Nightly" in the titlebar
Bleeding edge builds now have "Citra Bleeding Edge" in the titlebar

hook: remove clang-format check

dyncom: Correct SXTAB16 and SXTB16

Qt cleanups 2

This fixes a build issue on gcc 6 due to -Werror and a warning caused
by boost::optional, see:
https://github.com/MerryMage/dynarmic/issues/83

Qt cleanup

Fixes #2556

Added drag and drop feature to the code

core: add missing errors.h in CMakeLists.txt

Qt/GameList: Use suffix() to parse the file extension

Fixes #2567

added http service enum to the log.h file

completeSuffix returns everything after the first period, which means
that a file such as `foo.bar.3ds` would not get recognized.

Re-organize software rasterizer code