BUG: Can't follow some travelers

[SandraBergstrom]

Describe the bug
I can follow some users but not others. Sometimes it works, and sometimes not, but its acting strange.. not turning to an unfollow button directly anyway

To Reproduce
Steps to reproduce the behavior:

1. Go to a users profile
2. Click on Follow
3. See error

Expected behavior
the button should change to a Unfollow button.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• Chrome

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

[SandraBergstrom]

Solution:

• There was a "_" missing in the filterset in the Traveler views.
• Removed extra "," in the urls
• Erase database.
  See these backend commits:
• 0311720f26d6100e3a5dbe9225698f25c2357bb1
• 56ff44ab7b781ebf8a6991a9fbc84b5cf23d7294
• 1baab432d36416358a7798b31d83b9fe7f766968

Frontend:

• Remove the .active css dark since that was making the button all dark when pressed which looked strange.