Fixed some bugs with admin links on microlesson screen.
Cleaned up Alphabet units, put audio back in, added typing guide.
Lesson screen with progress indicators, basic answer checking on translate_word exercise.
Updates to lessons and tasks:

* Added boilerplate code for sample tasks (both javascript and underscore template).
* Translate_word task adapts state based on how incorrect your answer was.
* Deleted old, empty tasks, which will be replaced by tasks built off the boilerplate code.
User submission import script. Added docu to README.txt.
New task for typing greek. Microlesson pulls from task sequence.
Submission import script added. Preparation text import.
Import any text script tested.
Import any text script tested.
Readme update.
Super simple task for identifying letters of the alphabet.
Update readme.md
Updates to admin, database updates.
Merge pull request #54 from OpenPhilology/development

Greater support for different kinds of tasks within a sequence.
Updated.
Merge branch 'master' of github.com:OpenPhilology/phaidra
Got rid of "Home" screen, fixed header bugs.
Fixed CSS isues on index, aboutus, profile screen.
Bug fixed. Message adapted.
Merge branch 'master' of github.com:OpenPhilology/phaidra