[RA1]Unlimited tutorial text size + map specific tutorial text

[mvdhout1992]

These change allow for: -unlimited size of tutorial.ini text (normally limited to 225 lines) -adding custom tutorial text to your map, overwrites the default tutorial text. Add a [Tutorial] section to your map with = as entries, e.g.:

[Tutorial] 1=Hi this is line 1 2=This is line 2

This text will, when activated via a map trigger action, be displayed in the top left of the screen.

[mvdhout1992]

Fixed the memory leak as discussed on Discord.

[mvdhout1992]

Since you're adding a global and changing the old one. Would it make sense to move this into SessionClass or something where it's scoped better?

I'd put it in ScenarioClass if anywhere.