Check code for places that need 'forceUnicode'

[y0014984]

Unfortunately, string length counts bytes but not characters. That means that unicode characters count 2 bytes instead of one. In scripts you can change this behavior with the forceUnicode command. Affected commands are:

• copyFromClipboard
• copyToClipboard
• count
• find
• in
• insert
• reverse
• select
• splitString
• trim
• regexFind
• regexMatch
• regexReplace

So, every time we use one of these commands and the affected string could be a user generated unicode character we should take account for that. I have already done that at one place in PR #402 for the function fnc_terminal_removeCharFromInput.sqf