Fix specs after gemification

* Reorganization of the lib/lendger/ directories and source files
* I added a new gem, Inflecto, to handle namespaced attribute Types
  * e.g., Lendger::Person
* Fixed all issues relating to requireing and namespacing

* Also,
  * Removed some left-over directories under lib missed during de-railsification
Merge branch 'clean_up_tests_and_add_interactors'

* clean_up_tests_and_add_interactors:
  Fix specs after gemification