Add "whole word" search option

[longrunningprocess]

Description

This feature will allow users to perform "whole word" searches. There are a bunch of ways to test this, please let me know if you'd like me to add any more tests below.

Fixes #1222

Type of Change

• New feature (non-breaking change which adds functionality)
• UI change

Screenshots

Provided with test cases below

How Has This Been Tested?

Project used for testing (5491 entries): Alex's project.zip

Functional testing (should work the same in both list and entry view)

• Searching for sor or SOR should result in 47 matches

• Searching for sort or SORT should result in 4 matches

• Opening "Options" and checking "Whole word" should narrow the matches down to only 2

• Checking the "Whole word" option should cause the "Options" changed indicator to appear

• After choosing the "Whole word" option, clicking the "Show all" button should clear it

Screen.Recording.2021-10-25.at.3.34.24.PM.mov

• After choosing the "Whole word" option, refreshing the browser and/or navigating between list and entry views should retain the setting

Screen.Recording.2021-10-25.at.3.41.58.PM.mov

• Deleting an entry should still retain all search and filtering options

Viewport testing (list view)

• Filter options should stack on a small viewport, i.e., phones

• Filter options should stack and expand on a medium viewport, i.e., tablets

• Filter options should only expand on a large viewport, i.e., desktops

• Searching by the semantic domain, 2.1.2 should result in 2 matches

• Searching by regex tokens should not result in matches, e.g.,[a-z] should result in 0 matches

Viewport testing (entry view)

• "Advanced" options should always stack when visible, i.e., medium and large viewports

Checklist:

• I have performed a self-review of my own code
• I have reviewed the title/description of this PR which will be used as the squashed PR commit message
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works

[alex-larkin]

Looks great!

[palmtreefrb]

Everything looks good to me.

[rmunn]

Good work overall, but a couple issues noted in the comments. In particular the regex one needs to change. I didn't have time to do a thorough review, so it's possible that my comments on scrollDivToId aren't correct and the error-checking isn't necessary.

Once the search is regex-character-safe, I'll be ready to approve this.

[rmunn]

Looks good now that the regex-escaping code is in. I noticed one bit of end-of-line whitespace (which GitHub's highlighting flagged as I was reviewing the commit, or I would have missed it). That's just cosmetic, though, and even if that doesn't get fixed this PR is good to go.