Misc sql cleaning + def exist test
tables import order
primary & foreign keys
possibility to add constraint when creating sql tables
print lang columns based on a sort order
check if definition exist before writing it
counter for more (?) than lexemes
Def num starts at 1
Improve defs: remove ', detect some templates
Only keep def/random lexeme if there is a def in an accepted type
Skip variants, delete comments, use some templates
Added template "lien"
Namespace can be a number
Inner join (not that this changes anything here)
Level2: avoid the {{=}} template
Add partial ja transcription
Code cleaning