About page with lildebi version

[SDkie]

we should add an about page with version number and may be link to source code.

[eighthave]

yes! good idea! FDroid has a good one you can use as an example, or I'm sure
there are others.

[adamjhogan]

#150 addresses this.

[karstengit]

I think it is more important to give more information about the working of lildebi itself.
I am feeling complete lost after i tried to install and start it.
#164

One example: Where can i find the logfile and what is the name of it?