Redmine

This is the brother ticket of #18894. (see #18894-5 ).

In the query with "Group results by" a boolean filed, both "No" and "(blank, or to say, not specified)" are grouped under same name (label) of "none" collapse/expand indicator lines.
This happens if the boolean field is not defined as "required".

Boolean field which is not defined as "required" contains 3 values, "Yes", "No" and "(blank, or to say, not specified)", so it is better to be grouped in different label names.

Could it be changed the label of "none" for "(blank, or to say, not specified)" value to the other one ?
The candidate strings are "null", "No Value", or"(blank)".

• Notes on translation
  I am afraid translation texts may be affected when changing the label text strings. For example, "none" is translated to "なし" in Japanese. If the string is "null", it may be translated to "空".

• Reported version
  Redmine 2.5.0.stable. Details are as follows.
1. Test redmine (Windows7)
   

    Environment:
      Redmine version    2.5.0.stable
      Ruby version       1.9.3-p231 (2012-05-25) [i386-mingw32]
      Rails version      3.2.17
      Environment        production
      Database adapter   Mysql2
   

2. Production redmine (Linux)
   

    Environment:
      Redmine version    2.5.0.stable
      Ruby version       1.9.3-p484 (2013-11-22) [x86_64-linux]
      Rails version      3.2.17
      Environment        production
      Database adapter   PostgreSQL