Cleanup of PhraseIteration EndTime

Mainly to familiarize myself with buggy section of code
Tries to remember track/path between song changes
measure.Time was causing all notes to be ignored

Fixed entire track being skipped if first note before the first measure
started. E.g "You Really Got Me (Rhythm)" on higher levels.
Added test project
Added class to detect steam Rocksmith folder
Opens RS2014 disk tracks on startup
Moved filename to status bar
Toolbar styling and labels
Song toolbar floated/docked right.
Started writing GuitarPath track picker
Added path selection ComboBox
Added Costura to bake all DLLs into single exe
Version change. Temporarily disabled load on startup
Path chosen is saved in Settings
Added button to attempt Disk track autoload
Can open multiple psarcs at once. Open DLC button
Replaced button images with Paths to fix aliasing
Only updates song once all DLCs open
Moved track toolbar to bottom. Hidden until load.
Version bump. Screenshot update.