Fix AppSettings entry for path_length in json parser
Refactor internal font representation in AppSettings
Improve zoom and navigation values for animation
Simplify code in DBReader
Use map for fonts
Check for valid log level in AppSettings
Set loadOnStart default value to true
Use size_t as index type in for loops
Simplify some if conditions
Load location images only if loading gps data was successful
Minor formatting
Merge branch 'master' of https://github.com/ptrv/drawinglife