scons script includes date in version string for dev build

[rookie1]

I noticed the scons script includes current date in the version string even for dev build. This causes unnecessary re-compilation. Can we remove the date for dev build?

[thelusiv]

I added that so that I could build a package of the development version but still use the version string for the package name. It's not that important, for now you can just comment it out, and replace it with "development" as it was before.