ui: Fixes related to focus navigation (#948)

Scroll graph area with Ctrl + Arrows
Moved graph zoom to Ctrl + Shift + Up/Down
Scroll code area with Ctrl + Arrows
Fixed graph showing focus when activating the active symbol
Made links in project description focus-able
Fixed parent graph node not showing focus after hovering edge to child node

src/lib_gui/qt/window/QtKeyboardShortcuts.cpp

@@ -241,7 +241,11 @@ QTableWidget* QtKeyboardShortcuts::createCodeViewShortcutsTable()
 		 Shortcut::defaultOrMac(
 			 QStringLiteral("Previous Local Reference"),
 			 QStringLiteral("Ctrl + Shift + L"),
-			 QStringLiteral("Cmd + Shift + L"))});
+			 QStringLiteral("Cmd + Shift + L")),
+		 Shortcut::defaultOrMac(
+			 QStringLiteral("Scroll Code Area"),
+			 QStringLiteral("Ctrl + Arrows"),
+			 QStringLiteral("Cmd + Arrows"))});
 
 	return table;
 }
@@ -262,14 +266,18 @@ QTableWidget* QtKeyboardShortcuts::createGraphViewShortcutsTable()
 			 QStringLiteral("Activate Node in New Tab"),
 			 QStringLiteral("Ctrl + Shift + Enter | Ctrl + Shift + E"),
 			 QStringLiteral("Cmd + Shift + Enter | Cmd + Shift + E")),
+		 Shortcut::defaultOrMac(
+			 QStringLiteral("Scroll Graph Area"),
+			 QStringLiteral("Ctrl + Arrows"),
+			 QStringLiteral("Cmd + Arrows")),
 		 Shortcut::defaultOrMac(
 			 QStringLiteral("Zoom in"),
-			 QStringLiteral("Alt + W | Ctrl + Mousewheel up"),
-			 QStringLiteral("Alt + W | Cmd + Mousewheel up")),
+			 QStringLiteral("Ctrl + Shift + Up | Ctrl + Mousewheel up"),
+			 QStringLiteral("Cmd + Shift + Up | Cmd + Mousewheel up")),
 		 Shortcut::defaultOrMac(
 			 QStringLiteral("Zoom out"),
-			 QStringLiteral("Alt + S | Ctrl + Mousewheel down"),
-			 QStringLiteral("Alt + S | Cmd + Mousewheel down")),
+			 QStringLiteral("Ctrl + Shift + Down | Ctrl + Mousewheel down"),
+			 QStringLiteral("Cmd + Shift + Down | Cmd + Mousewheel down")),
 		 Shortcut(QStringLiteral("Reset Zoom"), QStringLiteral("0")),
 		 Shortcut::defaultOrMac(
 			 QStringLiteral("Open Custom Trail Dialog"),