Add more description for admin menu.
Quiet DB logger
Choose max score if solved many time. Close #148
Merge pull request #171 from TakenokoChocoHolic/148_choose_max_score

Fix bug #148
Show inputs in problme page. Close #157
Limit input height in problem view
Fix mongoid.yml for deploying this app anywhere.
Merge pull request #173 from TakenokoChocoHolic/157_show_inputs

Show inputs in problme page. Close #157
Fix indentation.
Add link to group
Show users in problems page. Close #158
Merge pull request #176 from TakenokoChocoHolic/158_show_group_in_problems_page

Show group in problems page #158
Show "Small" and "Large" in different lines. Beautify the table. Close #180.
Remove unused code
Show title of the problem when hovering
Merge pull request #183 from TakenokoChocoHolic/180_width_of_scoreboard

Show "Small" and "Large" in different lines. Beautify the table. Close #180
Enlarge "Scoreboard"
 Move the links to admin pages into dropdown menus.
 Still buggy: The dropdown menu for the contest page is placed at a wrong place,
 because of pull-right.
Merge pull request #185 from TakenokoChocoHolic/151_enlarge_important_texts

151 enlarge important texts
Merge pull request #174 from TakenokoChocoHolic/mongoid_yml

Fix mongoid.yml to deploy our app on the normal machine instead of Heroku