replace tabs to spaces (#16795)

git-svn-id: http://svn.redmine.org/redmine/trunk@13142 e93f8b46-1217-0410-a6f0-8f06a7374b81
awesome_nested_set: import git 2-1-stable branch revision 606847769 (#6579)

https://github.com/collectiveidea/awesome_nested_set/commit/606847769

git-svn-id: http://svn.redmine.org/redmine/trunk@13143 e93f8b46-1217-0410-a6f0-8f06a7374b81
awesome_nested_set: import git 2-1-stable branch revision 3d5ac746542b564 (#6579)

https://github.com/collectiveidea/awesome_nested_set/commit/3d5ac746542b564

git-svn-id: http://svn.redmine.org/redmine/trunk@13144 e93f8b46-1217-0410-a6f0-8f06a7374b81
awesome_nested_set: import git 2-1-stable branch revision 8eaab19868f326 (#6579)

https://github.com/collectiveidea/awesome_nested_set/commit/8eaab19868f326

git-svn-id: http://svn.redmine.org/redmine/trunk@13145 e93f8b46-1217-0410-a6f0-8f06a7374b81
awesome_nested_set: add lib/plugins/awesome_nested_set/init.rb (#6579)

git-svn-id: http://svn.redmine.org/redmine/trunk@13146 e93f8b46-1217-0410-a6f0-8f06a7374b81
remove awesome_nested_set patch from config/initializers/10-patches.rb (#6579)

git-svn-id: http://svn.redmine.org/redmine/trunk@13147 e93f8b46-1217-0410-a6f0-8f06a7374b81
awesome_nested_set: not use cache for max rgt (#6579)

git-svn-id: http://svn.redmine.org/redmine/trunk@13148 e93f8b46-1217-0410-a6f0-8f06a7374b81