Add language component

[oubiwann]

Tasks:

• [x] Create component
  • [x] Add markov and syntagmata generators to :lang map
  • [x] Add db connection to :lang map (using the plugin)
• [ ] Define API for accessing data via db (instead of filesystem reads)
  • [ ] BLOCKER: Re-work the plumbing around generator implementations #28
  • [ ] Generating assembled content
  • [ ] Generating random content
  • [ ] Generating names
  • [x] Reading stats
• [x] Add appropriate LangDB schema keys to redis plugin
• [x] Update the lein aliases to use the new language component
• [x] Update CLI tools to use the new language component

[oubiwann]

The language component needs to include a connection to a dedicated Redis db instance. Might be worth looking at graphdb and seeing if there is a benefit to splitting out generic redis support into its own lib.