Changed linking from static to shared.
This prevents a bug where the (lighting) renderer does not have any skylight.
Changed format of the CMake files a bit.
Included leaflet.js directly in the template folder and some small
template code reworkings.
Added a control to show user-defined content.
Changed absolute includes to relative includes
and removed some unnecessary.
Moved renderer configuration code into own subdirectory.
Merge branch 'master' of https://github.com/m0r13/mapcrafter