Mod categories (#7298)

* feature

* more categories

* added categories

* filter installed part1

* display vanilla rulesets in rulesets category + fix download from URL not showing

* filter installed mods

* removed isVanilla variable

* only look at second topic

* same but for online mdos as well

* replaced tilesets with graphics

* translations

* code duplication

* removed vanilla content from rulesets

* combined the function into one

* revert amountPerPage even tough its already on master

* Filter class

* 1

* mutableListOf<>()

* mutableListOf<>() again

* getFilterText removed

* !categoryFilter(filter)

* matchesCategory

* if (modTopic.size < 2) return false

android/assets/jsons/translations/template.properties

@@ -1481,6 +1481,15 @@ Are you SURE you want to delete this mod? =
 Updated = 
 Current mods = 
 Downloadable mods = 
+Category: = 
+All mods = 
+Rulesets = 
+Expansions = 
+Graphics = 
+Audio = 
+Maps = 
+Fun = 
+Mods of mods = 
 Mod info and options = 
 Next page = 
 Open Github page =