Added Dexter Scrapers

[Francoisvt04]

Dexter Crawlers Changelog from Assemble

1.The following crawlers have been added:
howwemadeitinafrica, savca, rhodesunimathewblog, worldstage, classicfm, afp, naijanews, dailytrustnp, newteleonline, thepoint, dailytimes, thenation, mediamaxnet, leadership, theinterview, rsaparliament, guardian, nationaldailyng, nta, acdivoca, thisdaylive, channelafrica, nan, nigeriatoday, businessdayonline, standardmediaktnnews, globaltimescn, nationalmirror, monitorke, newsverge, sundiatapost, agrilinks, businessdailyafrica, thebusinesspost, theguardianuk, independentng, thenerveafrica, amehnews, sunnewsonline, seedmagazine, hallmarknews, destinyconnect, economist, washingtonpost, amabhungane, africainvestor, outrepreneurs, cnbcafrica, planintl, bloomberg

2.In document_processor.py:
The crawler classes were registered under the DocumentProcessor and DocumentProcessorNT classes.

3.In medium.py:
The Mediums for each of the crawlers where added under the create_defaults class method and added a url exception for mathewnyaungwa.blogspot.co.za under is_tld_exception class method and added a sub_domain_exception_list in for_url class method to handle blogspot.co.za.

4.In country.py
Added country codes for the newly added crawlers in the create_defaults class method.

5.Had to update the tld name list to include some of the newly added country codes.
These where the commands I ran to update the list:

• from tld.utils import update_tld_names
• update_tld_names()

[Francoisvt04]

Hey Matt, these are the new crawlers MMA asked for. Please review them along with with the change log notes I added and give feed back as needed.