* restore missing build:css rule

* allow case-insensitive matches in project, context names

* allow more alternate syntaxes in filter expressions
- allow the syntax "(A)" to mean "pri == A"
- allow the operator "=" as an alternate form of "=="
- let quoted project or context names include ( or ).
- allow short forms YYYY or YYYY-MM to mean first day of year or month
  in date expressions, eg "due < 2021" means before 2021-01-01.
- allow the syntax "due:DATE" to mean string match due date
  against prefix DATE,e eg: "due:2021" means due date begins with 2021.

* simple text color feedback for query validity

* bug fix to the due:DATESTR feature

* add support for prefix match in project and context

* tweak filter lang to recognize unclosed string, regex

* [20210620_Sun] add json for JP translation.json

* [20210620_Sun]-103922 Overwrite EN, Line1〜23 to JP

* [20210620_Sun]-104516 〜75Line

* [20210620_Sun]-105719 Mostly Done

* [20210620_Sun]-112046 BrushUp

* [20210620_Sun]-112519

* [20210620_Sun]-113113

* [20210620_Sun]-121039

* [20210620_Sun]-170436 修正

* [20210620_Sun]-170741

* [20210620_Sun]-171433 OK

Created the folder and the JSON file with strings translated from English to Brazilian Portuguese. The folder is named "pt-br", but it can be changed by the project rules.

Co-authored-by: Thiago Alves Cavalcante <thiago.cavalcante@castgroup.com.br>