Config file potentially repairs incorrectly

[GeorgeCiesinski]

Description
The config file is capable of repairing sections including the [HISTORY] section. If you delete the whole shortcutsused line and run the program again, it repairs the section, but it replaces the shortcutsused with the shortcutchars value.

To Reproduce
Steps to reproduce the behavior:

1. Delete the config file
2. Run the program to generate a new config
3. Use a shortcut or two. Note the numbers in history
4. Stop the program and delete the shortcutsused option
5. Run the program again to repair the config
6. Note the incorrect values

Expected behavior
If any data is lost in the HISTORY section, the entire section should be rebuilt with 0 as the value for each option.