Added blocklist updating, main nav tweaks

Implemented Oliphant's unified tier 3 blocklist and the supplementary
instance audit file that tracks how many times an instance has been
blocked by a trusted sources member. Keeping the update function manual
for now to make sure it works smooth, then well automate so it checks on
    it's on at regular intervals.

NOTE: Lists used are located at the following urls:
https://codeberg.org/oliphant/blocklists/src/branch/main/blocklists/_unified_tier3_blocklist.csv
https://codeberg.org/oliphant/blocklists/src/branch/main/blocklists/other/domain_audit_file.csv

Also simplified the main nav to just include a link to the den index
when logged in

routes/web.php

@@ -35,4 +35,6 @@ Route::group(['prefix' => 'den', 'middleware' => 'member.check'], function () {
     Route::get("/member", [DenController::class, 'member']);
     Route::get("/locations/{action?}", [DenController::class, 'location']);
     Route::post("/locations/add", [LocationController::class, 'addLocation']);
+    //admin actions
+    Route::get("/admin/update", [LocationController::class, 'updateLocations']);
 });