Settings - Add support for percentage sliders

[mharis001]

When merged this pull request will:

• Allow sliders to be specified as "percentage sliders"
  • For example, if the range is 0 to 1, displayed value will be formatted to 0 to 100 and have a percent sign - users will also input edit box values between 0 and 100
• Increase width of controls to allow for all of "100%" to fit in the edit box

[commy2]

Haven't checked the control size and position changes, but skimming through the ACE settings should show any discrepancies.

[jonpas]

Good from my side, just make sure to check for discrepancies in ACE.