fix -prune arg comment; enable wallet is possible now

…cale{Short,Long}Date

86b1ab6 refactor: Replace deprecated Qt::SystemLocale{Short,Long}Date (Hennadii Stepanov)

Pull request description:

  As all deprecated warning in Qt 5.15.0 were eliminated in #46, Qt 5.15.1 introduced another one that is fixed in this PR.

  Required for bitcoin#20182.

  Details in Qt docs:
  - https://doc.qt.io/qt-5/qdatetime.html#toString-1
  - https://doc.qt.io/qt-5/qdate.html#toString-1

ACKs for top commit:
  jarolrod:
    Tested ACK 86b1ab6 on MacOS 10.15.7 and Arch Linux both with Qt 5.15.1
  jonasschnelli:
    Tested ACK 86b1ab6

Tree-SHA512: 1dbba8ee70c895bf58317172a9901cdbe5503b1d6258f51caaae88d88d332d9fbd4697c995192d31e3618ddfd532c5f5881289b3af1184422e5a9263a1224115

a44caf65fe Merge bitcoin-core/univalue-subtree#28: Import fixes for sanitizer reported issues
135254331e Import fixes for sanitizer reported issues
d5fb86940e refactor: use c++11 range based for loop in checkObject
ff9c379304 refactor: Use nullptr (c++11) instead of NULL
08a99754d5 build: use ax_cxx_compile_stdcxx.m4 to check for C++11 support
66d3713ce7 Merge bitcoin-core/univalue-subtree#29: ci: travis -> cirrus
808d487292 ci: travis -> cirrus
c390ac375f Merge bitcoin-core/univalue-subtree#19: Split sources for easier buildsystem integration
4a5b0a1c65 build: Move source entries out to sources.mk
6c7d94b33c build: cleanup wonky gen usage
a222637c6d Merge #23: Merge changes from jgarzik/univalue@1ae6a23
f77d0f718d Merge commit '1ae6a231a0169938eb3972c1d48dd17cba5947e1' into HEAD
1ae6a231a0 Merge pull request bitcoin#57 from MarcoFalke/test_fix
92bdd11f0b univalue_write: remove unneeded sstream.h include
ffb621c130 Merge pull request #56 from drodil/remove_sstream_header
f33acf9fe8 Merge commit '7890db9~' into HEAD
66e0adec4d Remove unnecessary sstream header from univalue.h
88967f6586 Version 1.0.4
1dc113dbef Merge pull request #50 from luke-jr/pushKV_bool
72392fb227 [tests] test pushKV for boolean values
c23132bcf4 Pushing boolean value to univalue correctly
81faab26a1 Merge pull request #48 from fwolfst/47-UPDATE_MIT_LINK_TO_HTTPS
b17634ef24 Update URLs to MIT license.
88ab64f6b5 Merge pull request #46 from jasonbcox/master
35ed96da31 Merge pull request #44 from MarcoFalke/Mf1709-univalue-cherrypick-explicit
420c226290 Merge pull request #45 from MarcoFalke/Mf1710-univalue-revert-test

git-subtree-dir: src/univalue
git-subtree-split: a44caf65fe55b9dd8ddb08f04c0f70409efd53b3