Added CategoryModel::PermissionCategory().
Coerce gender into u, m, f.
- Added Gdn_Form->Captcha().
- Added the proper script require in ValidateCaptcha.
Added captcha validation to approval registration.
Fix bad data vector in tagging
#4 增加.ChildCategoryList和.Empty的CSS样式填充间距10px
Merge pull request #6 from 6b79/feature/4-fix-css-empty-padding

#4 增加.ChildCategoryList和.Empty的CSS样式填充间距10px
ProfileExtender: add birthday, registration checkbox fields
ProfileExtender: no timezones for birthdays
ProfileExtender: No magic on blank fields
ProfileExtender: respect blank birthday on register
#7 合并官方中文语言包和中文版自带语言包
Merge pull request #8 from 6b79/feature/7-combine-locale-zh_CN

#7 合并官方中文语言包和中文版自带语言包
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into community