Record type labels should be singular

[cweiske]

Currently all the record type labels are plural: "Answers", "Fields", "Forms", "Mails", "Pages"

When creating a new record via the Web > List view, all other record types have singular labels. Powermail should follow the TYPO3 standard here.

"Create new record: Answers" sounds strange.

When editing forms, "Create new Pages" and "Create new Fields" are also wrong because each button only creates one single page/field: