Added a way for the user to add and select image libraries. Users can navigate to a library by double clicking on a folder, and exit a library by clicking the home button or by pressing escape.

Added LibrarySettings:
* LibrarySettings allows the users to add, modify, and remove library folders from their library.

Added LibraryInputBox:
* LibraryInputBox is used to open up an input dialog for the user to create a library item

MainWindow:
* Added Home button
* Added Library view for imageListView
* Added LibraryListView_MouseDoubleClick(object, MouseEventArgs) to handle double click events in Library view
* Added void SwitchToLibraryView() and void SwitchToImageView(string) to switch between views
* void BuildImageListView() -> void BuildImageListView(string) to handle path input
* void SettingsButtonClick(object, EventArgs) converted to check library changes instead of a path setting
* Removed first-time run checking

Settings:
* Converted Path references to Library
* Changed Set Folder button to Manage Library
* Manage Library button opens library settings manager
* void SetPathButton_Clck(object, EventArgs) -> void ManageLibraryButton(object, EventArgs)

General UI:
* Changed default positioning of windows
* Changed License and About to show up in taskbar
* Changed About dialog to be a fixed size
* Added license for folder icon
* Adjusted About text to include new functionality

Settings.settings:
* Added LibraryItems
* Removed Path

Program:
* Cleaned up unused references