The server list was being resorted every frame when the server details of a favorite server were being rendered, which was causing the FPS to drop by a factor of 5.
Respect the intratick when displaying the player position, speed and angle, to fix this information always being shown for the next tick. See #6417. This does not resolve the issue yet, as there are more HUD and player elements that need to make use of the intratick.
Fix highlighted text of server browser entries not being refresh correctly when switching tabs.
This also reduces lag when switching tabs, as the UI elements for all tabs are now cached and don't need to be recreated when switching.
Regression from #7203.
Replace existing hard-coded support for two "networks" with support for a dynamic list of "communities" which are indexed by a string-ID, though right now the DDNet and KoG communities are still hard-coded. The communities now also support an arbitrary number of associated countries, types and servers. This is a refactoring to prepare for getting the list of communities dynamically from the server and removing the DDNet and KoG tabs from the serverbrowser.
New UI elements were being created for every server info after refreshing the server list. At the same time, old UI elements were not being deleted when the server info objects are deleted. The use of `mutable` for this purpose was also rather unclean.
Now, a separate `std::vector` of UI elements is kept for all server browser entries, instead of associating the UI elements directly with the server info.
Move the "Filter", "Info" and "Friends" tabs to the top, above the tab content. Use icons instead of text for the tabs. Use animator to animate the tabs on mouse-over. Closes#6613.
Make spacings, corners and font sizes used in the filter, details and friends tabs more consistent.
Remove some unnecessary dark UI rect backgrounds.
Improve alignment of the number of friends with the heart icon for entries in the server list.
Improve layout of countries and types filters. Make the filters scrollable when there are many entries.
Refactor most of the server browser in preparation for replacing the DDNet and KoG tabs with a community filter, which will work like the countries and types filters. Split rendering of different server browser sections into multiple functions to improve readability. Reduce duplicate code for the countries and types filters.
Remove `Is` from the getter names for the same reason that removing `Get` from the name is preferred. The word `Is` was inconsistently used as a prefix in `CScrollRegion` but as an infix in `CListBox`.
- Remove unnecessary variable `Page`.
- Use `IGraphics::CORNER_NONE` instead of `0` and instead of the inconsistent-looking `CORNER_BR` for the KoG-button.
- Simplify UI rect layout.
ChillerDragon
