Allow for text displayed on flashcard to be copied to clipboard

Please add a feature to allow text displayed on the flashcard to be selectable and copyable to the clipboard. This is extremely useful for doing quick look-ups of additional information by pasting text from the flashcard into other applications. For example, when studying flashcards of Chinese phrases one might need to look up the definition or stroke order of a single character within the phrase. With the ability to copy-paste from the flashcard one can easily paste the character into a web tool that displays animated stroke order for the character. This can be accomplished in a roundabout way with the current version of Mnemosyne by selecting "Edit current card" from the "Deck" menu and then copying the character from there but it causes users to do a couple unnecessary steps. Being able to copy directly from the flashcard would be much easier.