debug mode: minor change
add Lingvo dictionary backend
Translation: changes to the internal exchange format
--
I level : group of meaning
II level : part of speach
III level : array of words
--
example:
{
    I   {
        noun   [
            [0] [
                [0] {
                    word     "word1"
                    category "category1"
                    note     "note1"
                }
                [1] {
                    word     "word2"
                    category "category2"
                    note     "note2"
                }
...
increase ID column size
SearchWords: search for the translated words too
get full path to the translation backends
migrate `examples` to the `words` table
`Word` schema: add `example` column
DB migration support
Menu of translators. Set the translation backend
don't ignore translation if partofspeach isn't determined
`--db` argument to use custom db file
schema: `word`.`irregular`, `word`.`in_test`, and `word`.`example` cat be NULL
We no longer need to reload linked words
Add `DBIx::Class::QueryLog` to analyze the DB-queries
Add right html-sidebar
AddWord: make a source textfield a bit higher
Memoization of `get_all` function (that returns hash of words)
Do not import examples any more!
`AddWord`: a bit of positioning improvements