New Batch operations: Translate Complete Matches and Add Label

I added 2 new batch operations to WebTranslateIt: Translate complete matches and Add Label.

Translate complete matches is a batch operation that looks for repetitions within your project (repetitions are segments matching entirely another segment which is already translated). When possible, this batch operation automatically translates the segment using the project translation memory. When no match was found, it leaves the translation empty.

Add Label is a batch operation to add a specific label to the selected strings. It is also possible to remove labels in batch.