added ice fishing

http://tibia.wikia.com/wiki/Ice_Fishing
fishing.lua script adapted
script fishing.lua adapted
fishing.lua updated

changed TRUE FALSE
updated fishing.lua

tested and workz now
thanks to ninjalulz and wibbenz for help :)
update fishing.lua add function waterelemental
update fishing

in the otlands forgottenserver they said:

marksamman  commented 2 days ago :

Please revert the changes you made to the parentheses in the first if-statement.
 Don't create the "i" userdata unless it is needed (if one of the if-statements evaluate true).
 You should also rename "i" to something like "targetItem".
update fishing removed single parentheses
Merge pull request #146 from Royalot/patch-10

added ice fishing