Merged r12163 from trunk (#14590, #14592).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12211 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12164 from trunk (#14592).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12212 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12162 from trunk (#14902).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12213 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12202 (#14977).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12214 e93f8b46-1217-0410-a6f0-8f06a7374b81
2.3-stable: Gemfile: pin selenium-webdriver version 2.35.1.

selenium-webdriver requires rubyzip 1.0.0.
rubyzip 1.0.0 requires Ruby version >= 1.9.2.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12227 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12229 from trunk to 2.3-stable (#15185)

Simplified Chinese translation for 2.3-stable updated.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12233 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12243 from trunk to 2.3-stable

Gemfile: remove "i18n".

activesupport 3.2.13 requires i18n 0.6.1 explicitly.
https://github.com/rails/rails/commit/197b9f4d61260bea9e2a0a4883977e02164a0667

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@12244 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merge branch '2.3-stable' into oxon
Updated gems (especially rails)