Added option --pretend to only print the filenames of files to import without importing them
Reduced the count of accesses of the pretend config option. Now it's only one place where it is read.
Changed the output to use the log system rather than print_.
The last commit broke the tests. Repaired...
Implemented a better solution for the pretend flag
Corrected the documentation (shortcut -e is not available any more)
Merge pull request #1162 from mried/import-pretend

Added option --pretend to only print the filenames
Changelog and rewording for import --pretend

(#1162)