Fix basic UI being overwritten on RscDiary unload

[jonpas]

When merged this pull request will:

• Fix UI / group bar re-appears on diary open #3907
• Add disabled message on changing basic config which has been set (forced) by mission config
• Remove redundant parameter from basic setElements

Todo:

• Add condition source when false to hint
• Add source to scripted element setting API

[commy2]

Question. Does this mean that showHud in vanilla breaks every time you open the diary?
This would be really stupid and probably is a bug.

[jonpas]

Apparently, I haven't tested myself in vanilla though. Map also uses RscDiary but that doesn't break it.

[commy2]

I guess they use the command in their scripting for the diary?

[jonpas]

Could be, can't check right now.