Display C-Rate for each cycle

[rbuchberger]

• C[theo] is theoretical capacity, in mAh/g. Specific to a given compound
  • Can be calculated analytically based on the chemical formula; possible future feature.
  • Will be a wide variety of entries that change often. Start with a hardcoded dropdown plus an entry box
  • Later, add the ability for users to add persistent entries to the list
• 1C is the current to discharge battery in 1 hour - 1C - I = C[theo] * m
• I[1C] is in mAh