Update to Spanish spellchecker

The algorithm to the Spanish spellchecker has been improved. The spellchecker, built into the Spanish dictionary), is designed to help users find the correct word when they don't know the exact spelling. For example, typing aragante will find the Spanish word arrogante. As mentioned in the technical overview of the spellchecker, the algorithm is particularly designed to take into account spelling difficulties for non-native speakers of Spanish, so will suggest some alternatives (such as p for b or t for d in some cases) in words where native speakers probably would not have a doubt.

The update includes some improvements around how the spellchecker distinguishes between accented and non-accented syllables when suggesting spelling corrections.