Red-Green colourblindness mode

[Hubcapp]

https://en.wikipedia.org/wiki/Color_blindness 8% of all males and 0.5% of all females are red-green colourblind. This is actually a huge amount of people. Playing RSC as a colourblind person I would imagine is currently a frustrating thing, since several of the UI elements in the RSC client were not designed with colourblindness in mind.

We should support user-configurable colours for both "bad" and "good" which would apply in the following situations:

UI elements where the information is given ONLY by the colour (very important)

Health Bars

Quest List

Friends List (online-offline)

UI elements where the Red-Green colour is used as an indicator in addition to textual information

Level hardness rating

Whether or not you have the runes to cast the spell

Game options toggles