Applied .container-fluid .container-limited classes

What does this MR do and why?

This MR relates to the issue

Context:

There is an alignment issue as mentioned in the issue, basically, the calendar activities section is completely aligned to left. As discussed in here, we are experimenting the looks for calendar activities. For now we have applied container-fluid container-limited classes to the div that has user-calendar-activities class.

Note: As this project won't run on my local, experimented with the changes on the production itself (By applying the changes). Please check this once on local as well.

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