language distribution chart

don’t use pie charts (in most cases):
http://www.businessinsider.com/pie-charts-are-the-worst-2013-6
sticking to bar chart to visualise the different languages
language detection task

changed errors into log messages (I think they actually stop the whole
process instead of just the invoked task)
renamed histogram files

now more logically called “frequency”
french "ocde"

so far, only “oecd” was used, and it didn’t find any French or Spanish
news items (quite logically). added “ocde” which is the abbreviation in
these languages.

question still remains how this approach is scalable for more urls (not
Google RSS). we’ll see then …
host extraction from url

utility function to extract the protocol and host part of a url. may be
needed for the provider information later.