Improve i18n for 'PrintPreview' and 'LegendStylePanel'. Close #236.
Landscape option into print plugin

When you add the option 'addLandscapeControl' to the print plugin, a new checkbox apear when you select '2 pages legend' option. This option select the new configuration into the config.yaml as '*_landscape'.
Merge pull request #237 from alediator/print_preview_landscape_option

Landscape option in the print plugin
Fix for 'landscapeCheckbox' default settings in PrintPreview. Close #238
Introduce 'fontAntiAliasing' legend options to the print tool. Close #240
fixed #245: added headers option (mainly for authentication) to WPSClient/WPSProcess
fixed #246: added authentication support to WMSGetFeatureInfo