"##trade_and_industry##" in tutorial2.xx missed

[Lars Gusowski]

it is the header of the third message.

Ingame it is displayed as "##trade_and_industry##" but tax_and_industry would be better, then there is nothing learned about trade.

Trade will be learnd later.

[Lars Gusowski]

"##trade_title##" : "Handel im Imperium" is missed too. It is the header of the window explaining the trade.

[dalerank]

fixed #1078. locales now trimmed from empty string

→ <<cset fde97ea48bfd>>