Fixes for Retirement Graph

• Cleaned up methods for retirement graph. Much more legible now, easier for long term maintenance.
• Information box on retirement graph can now has different positions for graph visibility.
• Loan balance page planned for the future

Minor Updates

-Changed text color for legibility. #252249.
-More intuitive interface; buttons now change color on cursor hover.
-Minor typo and formatting fixes.

Initial Release

Investment & Retirement Calculator with simple GUI.