Added Finnish translation.
Merge pull request #205 from ServiusHack/feature/fiTranslation

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

So the purists can have a clean database with no prefixes.
fixed a small syntax bug
fixed problem with renamed demo extension
Merge pull request #214 from kevinpapst/fixes/build

fixed problem with renamed demo extension
Merge pull request #211 from vergissberlin/vergissberlin/jssyntaxbug

fixed a small syntax bug
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