Fix #566138: add setting to close the window when both the new window and send to printer are enabled

Fix for #364535: add some warnings about incompatibility of custom strings and the localization mechanism
Add explanation of the relation between the type- and node-specific print settings
Updated all translations (Dutch 100% thanks to joostvdl)

Fix #361107: Ensure that per-node configurations are available for block view use
Revert #349991 until the cause of #359343 can be determined

Improve variable cleanup at uninstall

Fix #247578: Print URLs by content type
Fix #298063: Most printed, emailed and PDFd blocks

Ability to configure use of text, icon or both in the PF links