Added default disabled select option

Closes #37 (closed)

Unfortunately, Thymeleaf contains an issue where you cannot use th:field together with th:selected. It turns out wrapping the elements in div tags solves this problem, but yes this is an ugly work-around. See: https://stackoverflow.com/questions/24203220/thselected-a-number-in-a-select-option-with-thymeleaf-doesnt-work

Jenkins Build SUCCESS

Results available at: Jenkins [Queue #154]

By Jenkins on 2017-09-11T07:45:32 (imported from GitLab project)

By Jenkins on 2017-09-11T07:45:32 (imported from GitLab project)

changed the description

merged

By Otto Visser on 2017-09-11T09:31:44 (imported from GitLab project)

mentioned in commit 88084698

By Otto Visser on 2017-09-11T09:31:44 (imported from GitLab project)