管理画面ユーザーIDに記号を使用できなかったのを修正

[nanasess]

• インストーラでは記号を使用可能
• パスワードの文字列強化 #293 の修正漏れ
• 管理画面>システム設定>メンバー管理のE2Eテスト追加

[codecov-commenter]

Codecov Report

Merging #515 (e53ec10) into master (a9603a1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #515   +/-   ##
=======================================
  Coverage   54.40%   54.40%           
=======================================
  Files          76       76           
  Lines        9039     9039           
=======================================
  Hits         4918     4918           
  Misses       4121     4121           

Flag	Coverage Δ
tests	54.40% <ø> (ø)

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[nanasess]

PHPStan のテストが落ちていますが、以下で修正済み
#514

[chihiro-adachi]

@nanasess
ありがとうございます、マージしました。