JCalc 5.0

[~] Removed Parenthesis auto "*" due to bugs.
[!] The project is basically done, I just need to:

• Make M+ more complex (the real M+ function of a calculator makes its own memory value, which gets increased by the value of the display)
• Add some better handling to each button
• Make the code more understandable
• Decrease the size of the jar
• Add formula redaction on the display, like putting * after ")" if there aren't any operation incoming
• Change "." with "," in button and display.