prevent map editor from crashing if loaded map is invalid
Merge pull request #1100 from minus7/mapversion-editor-crash

Loading map with invalid version crashes editor
[0.6.2.74] - skin author in select skin
[0.6.2.75] - Listbox buttons navigate
gitignore update
debug button info some lower :I
Merge branch '0.6' of https://github.com/teeworlds/teeworlds into tdtw_0.6
[0.6.2.76] - Finally Listbox buttons navigate fixed