Merge bitcoin-core/gui#116: Fix unreasonable default size of the main…

… window without loaded wallets

7b2e42e qt: Add WalletFrame::sizeHint (Hennadii Stepanov)

Pull request description:

  This PR fixes a bug in master (d67883d) and in 0.20.1 that could be easily reproduced with
  ```
  $ src/qt/bitcoin-qt -regtest -resetguisettings -nowallet
  ```

  ![Screenshot from 2020-10-25 21-21-27](https://user-images.githubusercontent.com/32963518/97117179-b1800100-170a-11eb-87c9-3120d39b9455.png)
  ![Screenshot from 2020-10-25 21-23-32](https://user-images.githubusercontent.com/32963518/97117186-b644b500-170a-11eb-8b5d-234ff7205003.png)

  **With this PR:**

  ![Screenshot from 2020-10-25 21-20-35](https://user-images.githubusercontent.com/32963518/97117226-f441d900-170a-11eb-8d66-98b7718a2bb1.png)
  ![Screenshot from 2020-10-25 21-23-03](https://user-images.githubusercontent.com/32963518/97117232-f99f2380-170a-11eb-85ed-c7b5ece926b2.png)

  ---

  Fix #104
  Fix #113

  This PR is an alternative to #107 without [hard-coding a size in pixels](bitcoin-core/gui#107 (comment)).

ACKs for top commit:
  jonasschnelli:
    Tested ACK 7b2e42e - I can confirm this fixes #104 (Ubuntu 20.04 - HiDPI 200%).

Tree-SHA512: eb0692dbeb3befdeecca0e41534c9783eab6637c14cc4f170ee42619235884f9354f8d22a10c20c08cc89dc5340a60b7dfa2523c12e64b3386b3fd2c6d5f934e

test/functional/mining_basic.py

@@ -20,6 +20,9 @@
     CBlock,
     CBlockHeader,
     BLOCK_HEADER_SIZE,
+    # SYSCOIN
+    CHAIN_ID,
+    VERSION_CHAIN_START,
 )
 from test_framework.p2p import P2PDataStore
 from test_framework.test_framework import SyscoinTestFramework
@@ -60,12 +63,16 @@ def mine_chain(self):
         assert_equal(mining_info['currentblockweight'], 4000)
 
         self.log.info('test blockversion')
-        self.restart_node(0, extra_args=['-mocktime={}'.format(t), '-blockversion=1337'])
+        self.restart_node(0, extra_args=['-mocktime={}'.format(t), '-blockversion=255'])
         self.connect_nodes(0, 1)
-        assert_equal(1337, self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version'])
+        # SYSCOIN 
+        assert_equal(255 + CHAIN_ID * VERSION_CHAIN_START, self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version'])
         self.restart_node(0, extra_args=['-mocktime={}'.format(t)])
         self.connect_nodes(0, 1)
-        assert_equal(VERSIONBITS_TOP_BITS + (1 << VERSIONBITS_DEPLOYMENT_TESTDUMMY_BIT), self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version'])
+        # SYSCOIN
+        # n = VERSIONBITS_TOP_BITS + (1 << VERSIONBITS_DEPLOYMENT_TESTDUMMY_BIT)
+        n = 4 + n + CHAIN_ID * VERSION_CHAIN_START
+        assert_equal(n, self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version'])
         self.restart_node(0)
         self.connect_nodes(0, 1)