[HERCULES] Fixed some issues with CELL_NOSTACK
- Crashing issue when loading maps using map cache (issue: 8270) http://hercules.ws/board/tracker/issue-8270-enable-cell-nostack-crash/
- Counter was not being decrease correctly when leaving a cell
Merged map_addblcell and map_delblcell
https://github.com/HerculesWS/Hercules/commit/ca39e47dc650e60bff54a8d276d8f7126ad1a5df#diff-d41d8cd98f00b204e9800998ecf8427e