Allow input of numbers into puzzles
Include all downloaders in the manual download dialog, even ones disabled for automatic download
Added ManualDownloader class and manual downloaders for MGDC and MGWCC

- Users can now manually download Matt Gaffney's puzzles via a browser, no automatic download
Removed Daily Record "I Swear" downloader, that puzzle is no longer being published
Added manual downloader for Brendan Emmett Quigley's puzzles
Added manual downloader for Devil Cross crosswords
Fixed incorrect "Show Errors" menu label when loading a new puzzle with errors shown
Fixed not being able to click on the clue lists on tablets due to text being selectable
Added automatic downloader for Devil Cross puzzles
Set version to v2.0.0 and updated release notes
APK for v2.0.0