Fixing little things in WordPress importer (WIP)

[felixfontein]

When importing a WordPress blog whose blog description was not set, I got null inserted into conf.py instead of "PUT DESCRIPTION HERE", which caused nikola build to fail. This is fixed in 5781644.

Then, there are two more problems with the WordPress importer which make it fail for me; see comments here: b6cbfcb

[felixfontein]

Parts will be fixed in #1824.

Missing at the moment: exception raised by tag.decode('utf8') under Python 3.

[felixfontein]

Parts will be fixed in #1824.

Missing at the moment: exception raised by tag.decode('utf8') under Python 3.

[felixfontein]

The currently failed checks are due to a disk full error on Travis, and a missing import markdown.

[felixfontein]

The currently failed checks are due to a disk full error on Travis, and a missing import markdown.

[Kwpolska]

Please make this mergeable and use try/except for decoding, and you can merge as soon as Travis builds.

[Kwpolska]

Please make this mergeable and use try/except for decoding, and you can merge as soon as Travis builds.

[felixfontein]

Should I modify both occurences in this case? (The second is here: https://github.com/getnikola/nikola/blob/master/nikola/plugins/command/import_wordpress.py#L419)

[felixfontein]

Should I modify both occurences in this case? (The second is here: https://github.com/getnikola/nikola/blob/master/nikola/plugins/command/import_wordpress.py#L419)

[felixfontein]

Ok, modified both. Now merging.

[felixfontein]

Ok, modified both. Now merging.