[latexila] (15 commits) ...spell: adapt gspell API version

[Sébastien Wilmet <swilmet src gnome org>]

Summary of changes:

  5c98985... spell: migrate from GtkSpell to gspell (*)
  66924fd... spell: create the Tools menu for the spell checking actions (*)
  6f4dbbb... spell: use GspellLanguageDialog (*)
  febf091... spell: use GspellCheckerDialog (*)
  6e4ed88... spell: rename gsetting for the inline checker (*)
  1a56057... spell: menu entry affects only current tab (*)
  23957d8... spell: add a gsetting for the default language (*)
  fa1b61e... spell: adapt code to use GspellLanguageChooser (*)
  166685e... spell: add global settings to the preferences dialog (*)
  65c5acd... spell: store spell settings in file metadata (*)
  3b291d3... spell: update global settings to open tabs (*)
  6181b0f... spell: improve menu items descriptions (*)
  9f59f9a... spell: update user doc (*)
  5d72d02... spell: improve tooltip in preferences dialog (*)
  223d221... spell: adapt gspell API version (*)

(*) This commit already existed in another branch; no separate mail sent