Scripts/Commands: Fix .mmap loc wrong coordinates

Fix .mmap loc command printing swapped x and y tile coordinates
Scripts/Commands: ".modify speed" targets current Player by default

Allow ".modify speed" command to target current Player if there is no target or if the selected Unit is a Creature.
This behavior could be extended to other commands that require target Players.
Scripts/Commands: Fix memory leak in ".gobject add" command

Valgrind log:
 158 (104 direct, 54 indirect) bytes in 1 blocks are definitely lost in loss record 24 of 73
 at operator new(unsigned long) (vg_replace_malloc.c:319)
 by GameObjectModel::Create(GameObject const&) (GameObjectModel.cpp:152)
 by GameObject::Create(unsigned int, unsigned int, Map*, unsigned int, float, float, float, float, float, float, float, float, unsigned int, GOState, unsigned int) (GameObject.cpp:237)
 by gobject_commandscript::HandleGameObjectAddCommand(ChatHandler*, char const*) (cs_gobject.cpp:155)
Scripts/Commands: Add comment about 9d5841073971c7f55cf621da3a31b38656618582 changes
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb
[TW288] - Core/Scripts: Make Sindragosa's Ice Tombs immune to knockback effects
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb
DB/CreatureText: Started the conversion to the BroadcastText system
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb
[TW] DB/Achievement Add missing sql code for 25 man if looks could kill.
Merge pull request #17 from gecko32/Truewow

[TW] DB/Achievement Add missing sql code for 25 man if looks could kill.
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb

Conflicts:
	src/server/scripts/Custom/Ulduar/Apply.sql