updated build.gradle-Files to current Versions of build-tools and SDK.
Added build-tool and api level version information
Merge branch 'master' of https://github.com/openpgp-keychain/openpgp-keychain
Lint Issue:
TypographyEllipsis: Ellipsis string can be replaced with ellipsis character
Replace "..." with ellipsis character (…, &#8230;)
... -> …
Lint Issue:
TypographyEllipsis: Ellipsis string can be replaced with ellipsis character
Replace "..." with ellipsis character (…, &#8230;)
... -> …
Merge branch 'master' of https://github.com/honnel/openpgp-keychain
Merge pull request #335 from honnel/master

updated build.gradle-Files to current Versions of build-tools and SDK.