ソフトウェアエンジニアリング

[phase-5]fix missing label for category selection field in term new/edit form

[phase-5]add category field to term index/detail view, and edit form

[phase-5]add category controller and it's views

[phase-5]added category model and modified term model

[phase-4]add delete operation

[phase-4]edit, update

[phase-4]implemented controller create method

[phase-4]add new form

[phase-3]use redmine's I18n#l method instead of Rails' I18n#t

[phase-3]error page with not exist id