[HTML CSS] The matrix sticks to the left border of the window (should not) still bug (TODO: CSS + DIV).

[FIX] matrix

merge samuel into alex

Cleaning

[CODE] Removed own API classes

ex: metadata.publication_date.year

- unwanted query keys lead to an error
- pagination is now available
- results can be sorted

- pagination support
- complex query support (9 operators, metadata & ngrams are fully queryable through joins)
- custom fields retrieval (TODO: aggregations)

merge