Add config to disable imports

Full Changelog: 1.0.2...1.0.3

Don't import if content already exists on path

Full Changelog: 1.0.1...1.0.2

Fix HtmlArea toolbar for ntb-article

Remove config for HtmlArea in ntb-config, because we need default
config.
Change channel in site.xml, so it is not mandatory, because channel in
ntb api is not mandatory.

Initial release

This application runs a cron-job to import articles from NTB, and creates article content in XP.