HR-235 - hrui - Degrade gracefully on 4.4
Merge pull request #286 from totten/master-44error

HR-235 - hrui - Degrade gracefully on 4.4
HR-239 - Add skeletal unit test for ListView
HR-238 - Draft ListView:

 * Display table of absences with period-subsections, type-columns, and some FIXMEs
 * Send full period data
 * Add helpers to classify absences by period
HR-239 - ListView:

 * Correctly sort into periods
 * Add placeholder hyperlink
 * Add helper CRM.HRAbsenceApp.moment()
 * Split tests into multiple files
HR-239 - Export list of absence types in CRM.absenceApp.absenceTypes
HR-226 - Rename qunit suite from "employee-widget" to "hrabsenceapp" (move files)
HR-226 - Rename qunit suite from "employee-widget" to "hrabsenceapp" (update content)
Rename "mock-data" to "fixtures"