Add score component for years of experience and integrate it more with the project

Add year_scores to configuration file
Move spelled-out numbers to NUMBER_WORDS in year_matcher
Add some docstrings to year_matcher
enhance clean_lines HTML markup remover

Make clean_lines remove HTML markup artifacts like "&amp;", "&gt;", etc.
Optimize Jaro matcher

Optimize the code in the Jaro matcher and add docstrings where they are
missing
read_criteria_file should read an actual file

Separate reading a criteria file from the function that reads its text.
Add a docstring

Add docstring to one function in the criteria reader
Delete unnecessary nosetests.xml
Move unit tests to lib where appropriate

Move top-level unit tests to jobparser.tests.unit.lib
Add apply_experience_duration_scores and apply_criteria_scores to evaluate and assign scores to search results
Add 2 steps to aria.py process for scoring all the links
Add 2 function docstrings to year_matcher
Fix missing variable issue
Update coverage.sh script to quit after the first failure