Update es_AR.lang

I made some adjustments after trying the 1.8 additions in game. I also fix some "out of the GUI" texts [stuff in Spanish gets longer] of 1.8 and older updates.  

Also, is there way to add translations for the new ramdomly generated books? I feel people who don't speak English would be missing a lot. 

Best regards, 

Inés.
Merge pull request #174 from ines-aguirre/patch-3

Update es_AR.lang
translation update for EBXL BiblioWoods

EBXL is coming back now that they have a beta for 1.7.10
updated for 1.8.x bibliowoods
updated for 1.8.x bibliowoods
updated for 1.8.x bibliowoods
Update ru_RU.lang
ExtraBiomesXL ru_RU.lang update
Forestry ru_RU.lang update
Highlands ru_RU.lang update
Natura ru_RU.lang update
Update it_IT.lang
Update it_IT.lang
Update it_IT.lang
Update it_IT.lang
Update it_IT.lang
Update it_IT.lang
Update it_IT.lang
Merge pull request #176 from fewizz/patch-1

Biomes O Plenty ru_RU.lang update
Merge pull request #177 from fewizz/patch-2

ExtraBiomesXL ru_RU.lang update