[s1960] Add support for condition_id to spell_area table

Add a new column `condition_id` to table `spell_area`
This column is intended to replace the columns
- quest_start
- quest_start_active
- quest_end
- racemask
- gender

Attention DB-Devs: A tool for convertion will be linked in the comments :)
Final removal of these no more required columns will be done after some time, so that you can adapt and provide UPDATE support for this change :)

Also simplify and gernalize the apply/remove code for these spell-area auras
SQL-Changes for spell_area.condition_id

Add first step of spell_area.conditionId

Add second step of spell_area.conditionId

This removes caching by quest_id
This will be slightly slower, but only expected in case of quest-accept/remove cases.

Some improvements and generalisations

(based on commit [12440] - ef5e75a)

Signed-off-by: Xfurry <xfurry@scriptdev2.com>