[Hotfix] Bug #663. Timeline: Incorrect time interval for timelines which "end" is less than 1 BCE.
Merge pull request #664 from alex-zen/hotfix

[Hotfix] Bug #663. Timeline: Incorrect time interval for timelines which "end" is less than 1 BCE.
Merge branch 'master' of https://github.com/alterm4nn/ChronoZoom