Merged r12965 from trunk to 2.5-stable (#16356)

Spanish translation updated by Jesus Gutierrez de la Vega.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12966 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12967 (#16321).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12978 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12971 (#16255).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12979 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12981 from trunk to 2.5-stable (#16368)

Polish translation updated by Jan Inowolski.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12982 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r13001 from trunk to 2.5-stable.

Gemfile: pin rake version 10.1.

rake 10.2.0 requires Ruby version >= 1.9.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13002 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r13004 from trunk to 2.5-stable.

add ChangeLog note that #15781 was forgotten to merge to v2.4.3.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13005 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r13015 from trunk to 2.5-stable (#16453)

Czech translation for 2.5-stable updated by Karel Pičman.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13017 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12985 (#14298).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13019 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12989 and r12997 (#16236).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13020 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12970 (#16259).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13021 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12990 (#16338).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13022 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12990 and r12991 (#16326).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13023 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12968 (#16319).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13024 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12986 (#16381).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13025 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12969 and r12973 (#16353).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13026 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r13018 (#16466).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13027 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r13029 (#16415).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13030 e93f8b46-1217-0410-a6f0-8f06a7374b81
Updates for 2.5.1 release.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@13032 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merge remote-tracking branch 'upstream/2.5-stable' into ro-2-5
update dependency