levels: e2m8 fixes
levels: e2m8 fixes

delete sidedefless lines 781, 791
  these can potentially crash the game although they were in the void

allow door out of first room to open
  set linedefs 21, 61 to type 1 manual door
  set passuse on line 131 for completeness' sake

fix secret area entrance
  sector 93 and linedef 394 have tag 12
  remove special from linedef 457 (not needed)

fix lift up to red key (sector 115)
  set tag 13, also linedefs 559, 562

fix lifts in penultimate area, after red key teleporter
  sector 132 and linedefs 666, 680 have tag 14
  sector 133 and linedefs 623, 661 have tag 15

change hanging body (thing 73) to non-blocking version

fix secret area count
  mark sector 94 as a proper secret for which you get credit

remove spurious tag 7 from sectors 127-129

cosmetic fixes
  stop secret area entrance tracks descending with floor
    clear lower unpegged flag on linedefs 456, 458
  fix alignment of wall behind lift up to red key (linedef 562)
  prevent walls under crushers in final area from moving with ceiling
    set lower unpegging flag on linedefs 747, 752, 754
  fix various misaligned STONE2 ugliness in final room

Signed-off-by: RjY <83893d85028dba5ed7fb8142c08f77f1480bf584@users.sourceforge.net>

jmtd/freedoom,jmtd/freedoom,CWolfRU/freedoom,jmtd/freedoom,CWolfRU/freedoom