wxGUI/history: add pop-up command menu with an item for delete command from history + history tree refactoring

[lindakarlovska]

This PR is largely based on #3310.

It implements new functionality with a pop-up command menu with an item for deleting commands from the history log and at the same time also makes some necessary changes in API to ensure better code maintenance in the future.
The API logic for the History panel respects the API used for the Data Catalog.

Main changes in API:

• Update signal was divided into two signals - addEntryToHistory and removeEntryFromHistory.
• The main class is the HistoryBrowserTree inheriting from CTreeView (similar logic as in DataCatalogTree)
• The HistoryBrowser class is used mainly for the widget layout

Fixes:

• except for editing the history log file when the command is removed from the tree, it also updates the cmd console buffer
• also addresses the issue when sometimes self._giface does not have to be included as the argument passed to the GConsole and GConsoleWindow constructors ([Bug] g.gui.gmodeler cannot be run due to the history pane #3336)

[petrasovaa]

Just couple small notes, otherwise it's ready.