Release 2.0.5: a small UI update

Added a few UI features. (No changes to the game content.)

• "Full Screen" menu option. (F11 on Win/Linux, cmd-ctrl-F on Mac.)
• "Find..." and "Find Next" menu options (ctrl-F/G or cmd-F/G). These let you do a simple text search in the story window. Note that the scrollback is not infinite -- sorry.
• In the "Preferences" dialog, there is now an option for "Other Font..." This lets you enter the name of any font installed on your system. (Although you have to type it in rather than looking through a list. Enter the name as you would see it in a CSS file -- the game's display engine is HTML, after all.)
• In the Alchemy Journal window, the list of rituals now shows "(*)" to mark rituals that you've learned but not yet tried. (Same as the RECALL RITUALS command in the story window.)
• Fixed a bug where a formula description in the Journal window might not be updated when it should be.