added back upload tab

removed upload tab, added caching and automatic workshop downloads for regular maplist

changed the 'download from workshop' function so that it doesn't rely on the workshop addon to exactly match the map name anymore. Instead the addon files are searched through looking for the map file

changed rendering functions to make them more stable and efficient (hopefully preventing crashes upon taking a screenshot

changed generating most requested maps from PerfectMapvote so that only maps with Workshop IDs will be used (so there won't be any maps that can't be automatically downloaded from workshop), made maplist download cache more persistent by also saving the progress of downloading the maps

fixed bug where the same map image showed up twice in !smm>Upload, added skipping maps from maplist that aren't installed

fixed loading maplist cache, automatic removal of maps from maplist cache that contain blacklisted files, added maps to 'Upload' tab that aren't currently installed

changed workshopID to Integer

added clearing of map addon cache upon completing the maplist or generating a new maplist

fixed some small bugs, added a cache for mounting maps from maplist