Added new puzzle sources and added links for all existing puzzles

- Added Andy Kravis, Cruciverbalist at Law
- Added Glutton For Pun, by Erik Agard
- Added about-puzzles page with links for all existing puzzles
- Changed NYT username entry to disable autocorrect by using the "textEmailAddress" input format
Some small improvements from Shortyz v3.2.7
Fixed MGWCC and MGDC downloaders
Added downloaders for American Values Club xword, CRooked Crosswords, and Crossword Nation
Converted tabs to spaces
Scrub usernames and passwords from log messages
Removed "Regular Sized/Large Sized" preferences category and collapsed all weekly puzzles into one preferences category
Added new Preference subclass to open a URL on clicks and refactored preferences code to use it
Automatically set the preference to download subscription puzzles after entering a username and password, and automatically unset it if either the username or password is blanked
Set version number to 1.0.4 and updated release notes
APK for v1.1.0
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