CB-6222 Various updates for the BlackBerry 10 documentation

Markdown README
Document build --web-inspector and --no-signing
Document release <target>
Document --query

Reference BlackBerry 10 instead of BlackBerry

Update bin/create documentation
Add Conventions section referencing Windows \\ v. /

Remove --shortforms
Remove keystorepass flag
Remove target default documentation
Remove --keystore pass from documentation `build debug`

Fix jake hint warnings
Fix debug mode copy-paste error
CB-6241 Default to prompting for passwords (replace --query with --no-query)

As a consequence, if you don't specify --no-query, and a password is needed,
you will be prompted.

If you have a build script which includes --query, the build will fail.