Code changes

• Rename InputDialog to SingleInputDialog to emphasize that the dialog only has one input and can't be used for e.g., the LSP port prompt
• Refactor some dialog occurrences to use the InputDialog
• Add onFinish lambda that runs if the user either confirms or cancels (instead of how it was before: the on dismiss lambda would be also called on confirm which is non-intuitive)
• No longer allow user to write newlines in certain dialogs like the rename dialog

UI changes

• Make the dialogs Material Design conform
• Split new folder and file actions into seperate dialog items
  • Add proper icons
• Add error detection for invalid file or folder names
• Allow user to chain folder names for nested folder creation (uses mkdirs())

Language changes

• Finally rename FileType to Wrapper type like suggested in refactor(strings): replace hardcoded strings with XML resources #793 (comment)
• Rename file size just to size (was also suggested in the PR above)
• Rename File info to Properties because the folder properties can also be opened