Merge pull request #125 from babs/code-refactoring-trans-fr

Updated fr_FR
TableWidget class refactoring done.
Merge branch 'code-refactoring' of https://github.com/pgmodeler/pgmodeler into code-refactoring
Class TipoPgSQLWidget refactored to PgSQLTypeWidget.
Class FormBasic refactored to BaseForm.

Class FormSobre refactored to AboutForm.
Class FormConfiguracao refactored to ConfigurationForm.
Class VisaoGeralWidget refactored to ModelOverviewWidget. Pending
comment translation.

Class FormRestauracaoModel refactored to ModelRestorationForm.
ModelOverviewWidget class refactoring done.
Class FormExportacao refactored to ModelExportForm.
Remove all dependencies to Qt3Support module.

Minor bug fixes on View editing form related to UTF-8 names.

Introduced a utilitary class Utf8String used to replace
QString::fromUtf8(const char *) calls.
PgModelerPlugin class refactoring done.
Updated fr_FR and fixed start-pgmodeler.sh arg transfer