Add regex string searches and surface geo target list field (Fixes #195, #450)

[rfrenchseti]

• Fixes #195
• Fixes #450
• Were any Django, import pipeline, table_schema, or dictionary files modified? Y
  • Database used: opus3_test_200211
  • All Django tests pass: Y
• Were any JavaScript or CSS files modified? Y
  • JSHINT run on all affected files: Y
  • Tested on Chrome, Firefox, Safari, and iOS: Y (Remember to test all browser sizes)
  • Tested for race conditions (with delayed API calls if applicable): Y

Description of changes:

Implemented "regex" qtype for strings and added appropriate tests. Made UI do input validation on strings. Implemented "multiple target list" field under Surface Geometry Constraints. Updated documentation.

Known problems:

None.

[rfrenchseti]

I've merged the current master into this branch and fixed the merge conflicts. All Django tests pass using opus3_test_200211. I also fixed one typo that caused a crash in the fake HTTP404 throws.

[rfrenchseti]

Also, it turns out that the central planet is always in the target list even if it's not in the field of view. I've updated the tooltip and FAQ to talk about this.

[juzen2003]

• Database used: opus3_test_200211
• All Django tests pass: Y
• JSHINT run on all affected files: Y
• Tested on Chrome, Firefox, Safari, and iOS: Y (Remember to test all browser sizes)
• Tested for race conditions (with delayed API calls if applicable): Y