User can choose merging method - add translation, suggestion or fuzzy
translation.

Currently only translations and fuzzy translations are implemented.

Part of issue #214

This functionality was never used by frontend code.

Merging is more obvious naming than conflict.

Currently translated at 100.0% (776 of 776)

Currently translated at 100.0% (776 of 776)

Currently translated at 100.0% (776 of 776)

This way it does not clutter code coverage stats

Currently translated at 100.0% (776 of 776)

Currently translated at 100.0% (776 of 776)

Currently translated at 100.0% (776 of 776)

Currently translated at 100.0% (776 of 776)

Flexible import_projects

Added possibility to add another translation to word instead of just
overwrite and ignore choices, issue #209.