Finish 6-dot braille tests for Finnish (and Finnish-Swedish) translation

[samimaattaCelia]

I will make the tests based on the Finnish 6-dot braille and make a pull request to the fi-braille branch. After that the rules should be made so that the tests pass.

To-do for me

After these I will make the pull request and the rules can be made.

• Write tests based on the Finnish braille standard
• Proofread the tests

To be solved

The braille should be named "suomi 6-piste" (Finnish 6-dot). Other challenge is that the Finnish-Swedish people in Finland learn the Finnish 6-dot standard, not the Swedish one. They shouldn't confuse these braille codes, since they are different. Two options:

1. Make pseudo-option for "Finnish-Swedish 6-dot" that simply points to the Finnish 6-dot braille code, maybe named "finlandssvensk 6-punkt".
2. There should be some other way for the Finnish-Swedish user to choose the correct code. For example through the user guide (or similar) or we trust that teachers teach students to use the correct code. The latter doesn't help people that are older and moving to use MathCAT.

I don't like to 'deceive' users in the option 1's way, but it might be the most straightforward way.