App Settings GUI (#41)

* Updated DesignNotes.ppt

* Update 1
Added Zoom and Pan functionality to axesSDG (probe display) on the MainGUI with additional buttons in the GUI

* Update 1.1
Minor Zoom adjustments

* Update 1
- Revert Clear Axes update to fix probe plot refresh issue (causing other errors)
- Adjusted units to appear for subject and group data

* Mini Fix
- DisplayAxesSDG.m file sync

* Condition - Unit Problem Fix
- Fix mistake on relating ppf with conditions

* Initial Commit
- Added configSettingGUI.m
- Adjusted AppSettings.cfg and ConfigFileClass.m to accommodate parameters

* Adjusted AppSettings.cfg
- Deleted the "Last Checked for Updates" section to reflect the changes in the master branch

* Homer Integration and Minor Adjustments
- Integrated the configSettingsGUI.m to Homer3 as a menu under Settings
- Disable toolbar and menu bar interaction for configSettingsGUI
- Added missing(?) downsampling and segment tool for SNIRF files

* App Settings Change
- Change Data Storage Scheme to files

* Minor Adjustments
- Added newline to the end of MainGUI.m

* Minor Adjustments
- Added newline to the end of configSettingsGUI.m