Match % < 100 + unchecked 'different context' has no result

https://github.com/zanata/zanata-platform/pull/449
Original issue not valid for all cases: In most cases, resId is generated from the content hash, but this depends on the source format. This won't be true for eg Properties files, nor for Gettext entries which have msgctxt.

If the match percentage is less than 100, the context must be different (as the resid is generated from the content hash in most cases)

In most cases, resId is generated from the content hash, but this depends on the source format. This won't be true for eg Properties files, nor for Gettext entries which have msgctxt.

For the common case where the resId is just a hash of the content, yes, context is mostly meaningless if you're also comparing the text. But in other cases it can be quite important, especially if the text isn't an exact match.

Automatically checked different context means, once user select less than 100% match, they have to accept translation with different context, as fuzzy. What if they want to reject translation less than 100% and with different context? resId for properties files is the properties key, for example:

will have less than 100% match, but same context between 1 and 2, different context between 2 and 3. In this example, between 2 to 3 you may want to reject translation (different context) but between 1 and 2 you may want to save as fuzzy.