Refactor components

Issue

#96 (closed)

Modifications

Refactored ActiveBox created hook and variables names.
Refactored Header variables names and loadUserData method.
Refactored MeasurementsBox timePassed function name.
Refactored Occurences separateInDays function parameters.
Removed some unnecessary console logging.

Notes

• Filter components were not changed as there is an issue (#92 (closed)) in progress to standardize the filters.