DB/Misc: Fix startup errors
Rename 2014_09_28_00_world_conversion.sql to 2014_09_28_00_world.sql
Buildsystem/MSVC: Removed /SAFESEH linker option from x86 debug builds as it doesn't make sense in debug builds and interferes with Edit and Continue

Closes #13233
WorldServer/Misc: Log possible errors on shutdown

Log possible error on shutdown happening when trying to cancel any I/O sync operation in CliThread, refers to #13201
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb
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