I-13_I-17_I-22_I-32

fixed issues:
(https://github.com/everit-org/jira-timetracker-plugin/issues/13)
(https://github.com/everit-org/jira-timetracker-plugin/issues/17)
(https://github.com/everit-org/jira-timetracker-plugin/issues/22)
(https://github.com/everit-org/jira-timetracker-plugin/issues/32)
files converted to Unix style line endings (LF)