add .mailmap to fix authors for git-shortlog
[FIX] .travis for account_constraints conflicts
[FIX] PEP8
Merge pull request #29 from yvaucher/7.0-add-mailmap

add .mailmap to fix authors for git-shortlog
Merge pull request #35 from eLBati/7.0_fix_travis_for_account_constraints

[7.0] [FIX] .travis for account_constraints conflicts
[IMP] Prevent to re-open account journal after closing period and add a button with allow to add all journals in a period in one single time