Include a blacklist option for tags (to help minimise spam) #1

[Dave Lane]

Ensure that the harvester can be configured to ignore posts containing tags in a blacklist. Some known spam tags include #asiangirl #japonesa

[Jim Tittsler]

Added tag blacklist to Twitter stream (twitters.js) and backup fill tool (twitterfill.js).

https://bitbucket.org/wikieducator/wenotes-tools/commits/ec4b1b647eb712e1fc7fa27ebe4fcd39d67412eb