Allow styles in <dt> elements

[j-f1]

I have not yet checked to see if this breaks things. Fixes #1154.

Steps

• check if doc includes <dt>
• check each <dt> to see if it has unwanted content

Potentially affected docs:

• [ ] ansible
• [ ] bottle
• [ ] cmake
• [ ] codeigniter
• [ ] django
• [ ] falcon
• [ ] godot
• [ ] julia
• [ ] matplotlib
• [ ] numpy
• [ ] pandas
• [ ] python
• [ ] scikit_image
• [ ] scikit_learn
• [ ] statsmodels