Calculator Version 1.2

The first big update to the calculator app by Yivan, mainly the Conversion Mode.

Changelog

 * Added "Conversion Mode"
 * Convertible types:
 * Temperature
 * Celsius
 * Fahrenheit
 * Kelvin
 * Length/Distance
 * Nanometer
 * Micrometer
 * Millimeter
 * Centimeter
 * Decimeter
 * Meter
 * Decameter
 * Hectometer
 * Kilometer
 * Megameter
 * Gigameter
 * Terameter
 * Inch
 * Foot
 * Yard
 * Mile
 * Time
 * Millisecond
 * Second
 * Minute
 * Hour
 * Day
 * Week
 * Month
 * Year
 * Decade
 * Score
 * Century
 * Millennium
 * Weight
 * Nanogram
 * Microgram
 * Milligram
 * Centigram
 * Decigram
 * Gram
 * Decagram
 * Hectogram
 * Kilogram
 * Megagram
 * Gigagram
 * Teragram
 * Pound
 * Ton
 * Cookery
 * Teaspoon
 * Tablespoon
 * Cup
 * Pint
 * Quart
 * Gallon
 * Gram
 * Kilogram
 * Liter
 * Pound
 * Liquid
 * Has a reverse switch
 * When nothing, 0 or - is inputted, the "Invalid" message appears.
 * When first time selecting to the mode per session, a pop-up will appear, saying "Opps! If you didn't specify what will I convert, then what is my use? Choose what you want to convert. (Sorry if this pop-up bothers you.)"
 * When picking the "--Select what type of conversion--" as the type of conversion, the above pop-up also appears.
 * Added a screen for list of modes.
 * Current modes listed are:
 * Manual
 * Automatic
 * Conversion
 * Automatic mode:
 * Added a "Factorial" option in Scientific
 * "Floor" works
 * Manual Mode:
 * Renamed "Automatic Mode" button to "Other Modes"

Bugs

 * Conversion Mode:
 * (1.2-1) Wrong spelling of Hectometer, "Hektometer"
 * (1.2-2) Wrong spelling of Fahrenheit, "Farenheit"
 * (1.2-3) Wrong spelling of Millennium, "Millenium"
 * (1.2-4) Wrong spelling of Hectogram, "Hektogram"
 * (1.2-5) "Lenth/Distance" doesn't work
 * (1.2-6) "Time" doesn't work
 * (1.2-7) "Weight" doesn't work
 * (1.2-8) "Cookery" doesn't work
 * (1.2-9) "Liquid" has no options
 * Automatic Mode:
 * (1.2-10) "Factorial" doesn't work

Bug fixes

 * Automatic Mode:
 * (1.1-2) Can't switch back to Manual Mode
 * Manual Mode:
 * (1.1-4) The bug at (click here), unofficially called "Number Bug", is unfixable.