To do #1060
User story #1059: Sprint view is not completely responsive
Replace contextual menus with icons on post-its
- Removed contextual menus on PBIs & tasks.
- Added icon to add children tasks on PBIs.
- Added icon to log time entries.
- Refactorized the deviation icons on PBIs & tasks.
- Refactorized CSS for PBIs & tasks icons.
git-svn-id: https://svn.ociotec.com/Software/Web/Redmine/plugins/scrum/trunk@1823 1633e602-76eb-4acd-8a1c-850ebfcfe024