Added check for files permission in updater
Allow installation with no table prefix.

So the purists can have a clean database with no prefixes.
Improve Spanish (Castillian) translation
Merge pull request #217 from avillar/lang_es

Improve Spanish (Castillian) translation
Merge pull request #207 from mikl/no_database_prefix

Allow installation with no table prefix.
Merge pull request #206 from claudegel/upgrade

Added check for files permission in updater
Correctly escape values when updating autoconf.php. (closes #215)

The responsibility to correctly escape database, hostname, username, password and timezone has been moved to write_config_file.
Merge pull request #220 from ServiusHack/issue/215

Correctly escape values when updating autoconf.php. (closes #215)