Entering empty class name causes StringOutOfBoundsException

Steps to reproduce:

Create a new class
Don't enter text
Press enter

Result:

Exception in thread "Animation Thread" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:686)
    at ca.mcgill.ram.ui.handler.impl.ClassNameHandler.shouldDismissKeyboard(ClassNameHandler.java:52)
    at ca.mcgill.ram.ui.views.TextView.verifyKeyboardDismissed(TextView.java:263)
    at ca.mcgill.ram.events.RamKeyboard.dimissKeyboard(RamKeyboard.java:101)
    at ca.mcgill.ram.ui.components.RamTextComponent.appendCharByUnicode(RamTextComponent.java:227)

This is due to the following line in ClassNameHandler.shouldDismissKeyboard(...):

textView.setText(Character.toUpperCase(text.charAt(0)) + text.substring(1));

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