Log Message:
Update to 3.1.2

Changelog:
3.1.2 (2015-11-14)

    Defect #20992: Parent priority "Independent of subtasks" setting \ 
doesn't work
    Defect #20360: Project copy does not copy custom field settings
    Defect #20380: Cannot assign users to projects with IE set to compatibility mode
    Defect #20591: PDF export does not determine picture (.png) height correctly
    Defect #20677: Custom fields with multiple values required by worklow can be \ 
blank
    Defect #20811: long pre lines are missing from PDF export of wiki pages
    Defect #21136: Issues API may disclose changeset messages that are not visible
    Defect #21150: Time logging form may disclose subjects of issues that are \ 
not visible
    Defect #21155: Deleting invalid wiki page version deletes whole page content
    Defect #20282: Error message when editing a child project without add \ 
project/subprojects permissions
    Defect #20730: Fix tokenization of phrases with non-ascii chars
    Defect #21071: find_referenced_issue_by_id fails with RangeError for large \ 
numbers
    Patch #21031: Polish translation update for 3.0-stable
    Patch #21105: Japanese wiki_syntax_detailed_textile.html translation for \ 
3.0-stable
    Patch #20785: Polish translation update for 3.1-stable
    Patch #20837: Bulgarian translation
    Patch #20892: Spanish translation for r14637
    Patch #20906: Fix mulitple tab navigation highlighting and content hiding
    Patch #21019: Traditional Chinese translation (to r14689)
    Patch #21076: Move inline CSS to application.css for private checkbox
    Patch #21085: Optimize issue edit description link