Renamed variables and commented code for readability

Renamed panes and variables so that the names were relevant (instead of panel_1, panel_2, etc.). The new variable names should help to make the code self-documenting. Comments were also added to help distinguish which areas of code corresponded with which panes.
Merge branch 'sbl-dev' of https://github.com/ZPak/wpi-suite into zpak-sbl-dev
Merge branch 'sbl-dev' of git://github.com/struct-by-lightning/wpi-suite into sbl-dev