Bug/mrmpeakpicking none smoother

[singjc]

Description

When MRMPeakPicking is selected in the GUI and the default smoothing parameters is set to 'none', peak picking fails because it has to be one of 'original', 'sgolay', or 'gauss'.

Added case if 'none' set the MRMPeakPicking smoothing to 'original'

I also added smoothing dict constant to use full smoothing names in UI.

Fixes #110

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Tested via GUI and ran unittests

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Contents (#111)

Other

• add smoothing dict to constants
• [BUG] when smoothing is set to none for MRMPeakPicker
• gaussian -> gauss
• MRMPeakPicking none -> original
• remove unused constant
• remove old constant import