Add report element

add report element in this case: text with info (count number of respondents on a question)

• Make the new report element known to the system

• controller/ReportElementController: add case 'text with info'

• forms/ReportElement/Add.php: add type 'text with info'

• Define the needed information:

• forms/reportElement/Edit/TextWithInfo.php: wich info do you need for this report element

• application/views/helpers/ReportElement.php: which info do you want to show in view report

• application/view/scripts/report/jrxml/subreport/textWithInfo.phtml: add subreport definition

(the actual subreport was already defined)