Ticket #2980: Add missing doc/hints french translation

Hints was split by paragraph (by double new line symbol instead of single newline symbol)

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add the hint-files synchronization with Transifex.

For upload English hint-file to transifex, type:
cd doc/hints/po && make to-transifex

For download translation from Transifex type:
cd doc/hints/po && make from-transifex && \
    git add ../l10n/mc.hints.* && \
    git commit -s -m 'Update hints files from Transifex'

WARNING! For the functionality you should have installed 'tx' and 'po4a'
utilities. These utilities isn't required for compile and install mc
(you may install these utilities only if you want to interact with Transifex).

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Merge branch '2980_doc_hints'

* 2980_doc_hints:
  Add the hint-files synchronization with Transifex.
  Ticket #2980: Add missing doc/hints french translation