ac7ccd67d7f2b09e36dd57405f899e4698dd3d78 scripted-diff: Remove unused "What's This" button in dialogs on Windows (Hennadii Stepanov)
b6951483ecdd4409a0e1d492c93bcd4d823f039d qt: Add flags to prevent a "What's This" button on Windows OS (Hennadii Stepanov)
Pull request description:
Fix#74.
From [Qt docs](https://doc.qt.io/qt-5/qdialog.html#QDialog):
> The widget flags _f_ are passed on to the `QWidget` constructor. If, for example, you don't want a **What's This** button in the title bar of the dialog, pass `Qt::WindowTitleHint | Qt::WindowSystemMenuHint` in _f_.
Screenshot on Windows 10 (2004):
- master (3ba25e3bdde3464eed5d2743d68546e48b005544)

- this PR (e322fe7e19ac504272d14b9b4f9b28b13df888ed)

ACKs for top commit:
Bosch-0:
tACK ac7ccd67d7f2b09e36dd57405f899e4698dd3d78 Tested on Windows 10.0.18363 Build 18363.
promag:
Code review ACK ac7ccd67d7f2b09e36dd57405f899e4698dd3d78 but with some suggestions.
jonasschnelli:
utACK ac7ccd67d7f2b09e36dd57405f899e4698dd3d78
Tree-SHA512: f6750a17b7203106cb4db5870becba1cef6a505d4edcc710ba131338bd3aae051510627e62c9bcb8345a7f497c614709e11aeb8f6ae3ea85967bbce2a8c69e64
This makes all include paths in the GUI absolute.
Many changes are involved as every single source file in
src/qt/ assumes to be able to use relative includes.