[FEAT.] : Map management

[5ejrChr1st3ns3n]

Currently you have sorting options but no way to actually do anything with the maps once sorted. Having a "remove all maps filtered maps" button that removes all maps fitting some combination of criteria that the user specifies would be a godsend as nothing can really do it at the moment.

Some examples:

• remove every [Ranked status] map uploaded before [insert date]
• Remove all [insert mapper] maps
• Remove all maps above/below [insert BPM]

And any combination of parameters, you get the idea.