Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/build/test/resources/locales/en-US/apps/keyboard/keyboard.properties

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+title=Keyboard
+
+ok=OK
+keyboardSettings=Keyboard settings
+
+vibration=Vibration
+clickSound=Click sound
+autoCorrect=Auto correction
+wordSuggestion=Word suggestion
+
+# Accessibility strings
+# LOCALIZATION NOTE (wordSuggestions): The name of the section above the
+# keyboard where the word suggestions appear. This is read out to screen reader
+# users when they put a finger in that area.
+wordSuggestions2.ariaLabel=Word suggestions
+# LOCALIZATION NOTE (dismiss): The "x" button that closes the word suggestions.
+dismiss2.ariaLabel=Dismiss
+
+# Key labels, used by the screen reader to correctly pronounce special and
+# punctuation keys.
+alternateLayoutKey2.ariaLabel=more numbers and symbols
+basicLayoutKey2.ariaLabel=letters
+upperCaseKey2.ariaLabel=shift
+backSpaceKey2.ariaLabel=delete
+spaceKey2.ariaLabel=space
+returnKey2.ariaLabel=return
+periodKey2.ariaLabel=period
+commaKey2.ariaLabel=comma
+colonKey2.ariaLabel=colon
+semicolonKey2.ariaLabel=semicolon
+questionMarkKey2.ariaLabel=question mark
+exclamationPointKey2.ariaLabel=exclamation point
+leftBracketKey2.ariaLabel=left bracket
+rightBracketKey2.ariaLabel=right bracket
+doubleQuoteKey2.ariaLabel=double quote
+leftDoubleAngleQuoteKey2.ariaLabel=left double angle quote
+rightDoubleAngleQuoteKey2.ariaLabel=right double angle quote

gaia/build/test/resources/locales/en-US/apps/keyboard/manifest.properties

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+name=Built-in Keyboard
+description=Built-in Keyboard
+number.name=Number
+number.description=Numeric layout