Added missing messages in es_es. Closes #1

Please note: the spanish translation for 'Gutter' can be either 'medianil' or 'calle'. I've used the first as it is technically more correct, even if it sounds a bit more strange than the latter.
Merge pull request #8 from bomberstudios/patch-1

Added missing messages in es_es. Closes #1
Merge pull request #10 from damienbigot/master

Reorganize translation rows
add off, on, snap to pixels
whitespace
clear form
fix broken messages
update asset
ignore everything except the main file
try ignoring this way
devdeps
Update error text
be a bit more verbose about the error
Merge pull request #11 from guideguide/update-error

Update error
add travis config
copy tweak
Merge pull request #13 from guideguide/test-branch

Copy tweak
Definitely nope
Merge branch 'test-branch'
Update pt_br translations for 3.1.0