Implement applying cell formatting rules

[Fluglow]

• Implement applying Formatter functions on cell value
• Modify Cell to hold its rawValue (previously formula), resolvedValue (previously value) and formattedValue
  • Modify other definitions to match the new naming pattern
• Fix cell not being resolved on formatter change
• Implement NumberFormatter as an example
• Remove console.log calls from tests

[Yousif-FJ]

Question: Do you think it is possible to make the resolve cell process into stages? Where the line between formula evaluation and value formatting is clear? Because cell have resolvedValue and formattedValue I can think of those operations as 2 stage operations and not a single resolveCell functions.

[Fluglow]

Question: Do you think it is possible to make the resolve cell process into stages? Where the line between formula evaluation and value formatting is clear? Because cell have resolvedValue and formattedValue I can think of those operations as 2 stage operations and not a single resolveCell functions.

Good point; I've split the logic since a formatter update shouldn't require resolving the formula.