Update footer version with release data from git

[morgajel]

When compiling the app for production use, it could theoretically pull release information from git.

[Belar]

When we get to stable release cycle, pushing updates in patch style from dev environemnet we could switch to player friendly changelog, for example:

Fixed simultaneous production for buildings.

[morgajel]

@Belar we should also be able to pull a list of tickets as well :)