Changing conversion: 1 mb = 1024 kb

I found that quota is using MB as 1024 KB, but in vestacp, if you set quota for a package 1024 MB, it's showing you 1,02 GB inside the panel.

If you edit the package and add 1000 MB, it's showing correctly in the panel, 1GB, but quota is exceeded at 976 MB.

humanize_usage use 1000 MB as 1GB instead of 1024 MB, so I fixed it.
Argument length increase. Fixes #165
Custom FTP dir
Merge pull request #163 from demlasjr/patch-8

Changing conversion: 1 MB = 1024 kb. Thanks to demlasjr.
Hungarian language file

Created by Kovács Ákos.
ar.php

Arabic Language file
Merge pull request #168 from Bashar/master

Arabic Translation file
Merge pull request #166 from kovacsakos/master

Hungarian language file added
Merge pull request #162 from kotso/master

Small BugFix, DNS_USER variable names
Added FTP_SHELL controller
multiple ftp accounts
Merge branch 'master' of github.com:serghey-rodin/vesta
Cleaned up dev stuff
multiple ftp account support
foricble user deletition
deprecated function
Fix webstats analyzer on Ubuntu 14.04
Fix MySQL autostart issue on Ubuntu 14.04
Fix backup exclusion for cron
fixed remote port for dns-cluster