Changed source for repository import: from csv to xls.
Moved examplecontent from csv to xls.
Added xls import tests.
Added force-text macro in text form.
Merge pull request #254 from 4teamwork/lk_xlsx_source

Import directly from Excel-File
Treeportlet: Enable scrolling in the portlet and scroll down to selected item.
Added plonetheme.teamraum to development-packages.