Fixes #290: Validate Client and Server Versions

A version match is when the major and micro version matches. We ignore
micros. The version check is always active. To deactivate it a user has
to set the system property com.eclipsesource.tabris.version.check=false.

Change-Id: I7679e2c4a07aa995349daa9c1c7eb2073c654e54