Slightly thicker scrollbar

Revert back recent changes with backgrounds
Fix ship design preview with fleet manager

Empire view - Removed background behind sector list and readjusted the information a bit
Expansion planner - Removed background behind planet list
Factions view - Removed background behind faction list
Galaxy view - Removed background behind contact list
Species view - Removed background behind species list
Technology view - Removed background behind technology select list
Removed references to static 4K resolution rules

Mod certified for 2.2.7 and 2.2.X
Modified species mod window - fixed scrollbar for traits

Modified market view - More adjustments to the market elements
Modified government view - Make the advisor selector list utilize the empty space
Modified planet view - Fixed building progress bar width
Modified Resettlement view - Fixed strata icon size

Modified planet viewer - moved window to the left, still moveable of course
Modified colonization window - fixed district panel
Modified market window - made it taller so that you can see more slaves/planets and swapped position for market goods and prices
Fixed leader window - forgot to increase the width for 1920x1080 resolutions

Modified fleet manager -- fleet list bigger and rearranged some elements
Modified starbase view -- increased the size of building entries
Modified leaders windows -- decrease height of leader cards
Modified leader recruitment window -- decreased height of leader entries
Some bug fixing on planet viewer code

Fix description for planets inhabited by primitives
Change sidebar style for planetary features

Fix button to reset game rules for resolutions less than 2560x1440

Remove obsolete GFX