[everia] update

- implement general _pagination method
- simplify code
- adjust URL patterns
- update test results

scripts/supportedsites.py

@@ -49,6 +49,7 @@ CATEGORY_MAP = {
     "e926"           : "e926",
     "e6ai"           : "e6AI",
     "erome"          : "EroMe",
+    "everia"         : "EVERIA.CLUB",
     "e-hentai"       : "E-Hentai",
     "exhentai"       : "ExHentai",
     "fallenangels"   : "Fallen Angels Scans",