Confirmation on unsaved settings.

[debbieellis7]

Description

Issue: #1250

Pop-up confirmation on PDF settings unsaved changes.

Testing instructions

Screenshots

Checklist:

• I've tested the code.
• My code is easy to read, follow, and understand
• My code follows the accessibility standards.
• My code has proper inline documentation / docblocks.

Additional Comments

[codecov]

Codecov Report

Merging #1277 (3b45b05) into development (0a90239) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             development    #1277   +/-   ##
==============================================
  Coverage          21.71%   21.71%           
  Complexity          2967     2967           
==============================================
  Files                244      244           
  Lines              11346    11346           
  Branches             364      364           
==============================================
  Hits                2464     2464           
  Misses              8874     8874           
  Partials               8        8           

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[jestonihpi]

Tested and confirmation box is now working on pdf settings and license tab.

[jakejackson1]

Partially implemented in #1563