refactored student.searchStudensByProgrammingLanguage and student.searchStudensByLanguage
refactored sort_decisions
adapt method and variable names to coding conventions
students now must have at least first_name and last_name, adapted controller tests to that
implemented search method to find matching students (programming language, language) #56
find matching students button now uses the attributes from the job offer #56
Merge remote-tracking branch 'origin/develop-ja' into develop-ja-find-matching-students