#1249 Bundle spelling dictionaries

[Aaron Madlon-Kay]

With the move to Gradle and upgrade to LanguageTool 3.3 we are now bundling full LanguageTool language-specific resources. To make the best use of these, we now automatically install LanguageTool-bundled Hunspell dictionaries when available.

In addition to LanguageTool-bundled dictionaries, in the case of French we are bundling the "fr-classique" dictionary from http://www.dicollecte.org/download/fr/hunspell-french-dictionaries-v5.6.zip

The bundled dictionaries are used like this ("install dir" refers to the setting Options > Spell Checking > Dictionary file folder; this defaults to <config dir>/spelling):

1. Upon opening a project, we look for an existing spelling dictionary in the install dir. If one is found, it is used and no further action takes place.
2. If no dictionary is found, we look for an OmegaT-bundled dictionary (inside OmegaT.jar). If one is found, it is installed to the install dir.
3. If no OmegaT-bundled dictionary is found, we look for a LanguageTool-bundled dictionary. If one is found, it is installed to the install dir.

Note that LanguageTool bundles either Hunspell or Morfologik dictionaries for any given language, and they are trying to move away from Hunspell. Thus we can't currently make use of bundled dictionaries for many languages (including English).

[Didier Briel]

Implemented in the released version 4.0 of OmegaT.

Didier