gui/launcher improperly handles uppercase in command names

[NicksWorld]

gui/launcher internally uses get_first_word, which lowers the command, before matching for commands and recording command frequency. This becomes an issue when a command includes any uppercase letters.

The following are issues that can be observed as a result:

• The help panel is unable to find the helpdb entry due to mismatched case.
• Command counts (user_freq), used to sort commands by most used, fail to refer to commands with uppercase characters.

Suggested solution:

• Move to case-insensitive autocomplete and help searching
• Allow autocomplete to correct casing