Merge pull request #571 from ggarza/julia_spanish

[julia/es] Translates Julia to Spanish
Merge with master.
Add to exceptions section. Add NSError reference.
Remove duplicate Categories section.

Fix small typo.
Merge pull request #572 from levibostian/objective-c-exceptions

Objective-C blocks and exceptions
WARNING: deprecated syntax "x[i:]".

0.3.0-prerelease+2077
Merge pull request #573 from trevor/patch-1

WARNING: deprecated syntax "x[i:]".
csharp: typos

combine #574 #575 #576 to one pr
Merge pull request #578 from weakish/patch-18

csharp: typos
Fix typos from issue 447.
Merge pull request #579 from levibostian/racket-typos

Fix Racket typos.
Fix typos in Spanish Julia