Update strings.xml

updated italian translation
Fixed hasGeminiSupport check failing on non-MTK devices.
- KeyGuardUtils class is not a standard Android class so it
is necessary to handle potential exception that is thrown by findClass
method when it can't find that class
- Added info on Gemini support into HW info startup log
Merge pull request #66 from pitone02/master

Updated Italian translations
Version 2.2.1
Added German translations - not complete yet (thanks to Napzter)
Updated changelog
Merge pull request #3 from C3C0/master

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