Fixed Natural Wonders exist mark

Fixed resource quantity problem.
Possible fix for the top bar button problem.

Fixed Crash issue when exit the game introduced by Sep 2019 game patch (related to the pulldown components)
Added known river names to the river ID pulldown
Some code refactoring and cleanup.

Some minor fixes and improvements.
Possible fix for different kinds of misbehaves due to too short author nickname.

Added tile owner selection.
Fixed bug with continent type detection.
Added resource icons to the combobox list.
Added resource tooltips to the combobox items.

Added localization (special thanks GOROH_K)
Added Save-Load button to quickly reload the game
Added river id selection
Added top bar button icon (special thanks Zyxpsilon)

Added tooltips for Natural Wonders and Improvements.
Added * mark for Natural Wonders that are exist on the map.

Improved UI
Added continent support
Added cliffs validation
Allowed to create water tiles from land tiles in crash safe mode
Changed Fix game data so it detects lakes
Changed Fix game data so it will not run crash unsafe fixes in Crash safe mode

Added hotkeys.
Added LoadOrder tag might help with some problems with absent button.
Reworked mod window to support opaque backgrounds.
Marked improvements Polder and Mekewap which is working only for civilizations which have them as their traits.

Added crash safe checks for river removal and Fix game data button made hidden in crash safe mode.
Added river modification status.