better persian translation

Better persian translation, according to Iran's Academy of Persian Language.
Merge pull request #286 from arashbm/master

Improved persian translation
[ci skip] Bump version to 0.7.2
Fix number delimiter and separator for Italian #291
Update rails/locale/ro.yml

Romanian language shows currency in the format: 123.300,50 i.e. separator is ',' and delimiter is '.'
Merge pull request #292 from cristianstanescu/patch-1

Update rails/locale/ro.yml
Adding back seconds and timezone information, as I feel that those are
important to have with this level of information. Also removed the
'hanging' h (which I understand stands for 'hora' or hour in english,
but is redundant in my humble opinion.
Merge pull request #293 from omaciel/braziliantimezone

Adding back seconds and timezone information (pt-BR)
Estonian translation fix.
Missing word in estonian translation
Merge pull request #296 from RM87/patch-2

Missing word in estonian translation
Merge pull request #295 from RM87/patch-1

Estonian translation fix.
Change about_x_* from 'cerca de' to 'hace'

To refer to dates, the word 'hace' is more common than 'cerca de'
Merge pull request #298 from EdgarOrtegaRamirez/patch-1

Change about_x_* from 'cerca de' to 'hace' (es-CO)
Correction from Lioness8257 on half_a_minute in Tagalog
Comma is used as a decimal mark in Russia

http://www.unicode.org/cldr/charts/by_type/patterns.numbers.html#4ec3d1b99830ad07
Merge pull request #303 from nashbridges/ru-comma-separator

Comma is used as a decimal mark in Russia
added Afrikaans local file
update the af locale
Update rails/locale/ca.yml

There are some spelling mistakes and other minor changes.