Add a bunch of tests for heals.

[Pentarctagon]

Covers only attributes, not filters.

[newfrenchy83]

I don't know why, but include a number in name of abilities don't accepted in shema validation

[newfrenchy83]

for validate Ubuntu check you shud change shema/units/abilities.cfg line 15 to
{SIMPLE_KEY name string}

[Pentarctagon]

It being translatable is correct. There's just no reason to ever translate the strings in unit tests.

[newfrenchy83]

And now it's tesring who fail

[Pentarctagon]

It looks like SCHEMA_VALIDATION is defined somehow for those tests.