[Atlas] Remove cout
[Atlas] Add feature sorting and filtering
[Atlas] Add UI management for feature sorting and filtering
[Atlas] Add better exception handling
[Atlas] Add unit tests for sorting and filtering
[Atlas] Add SIP bindings for feature sorting and filtering
[Atlas] Add Python unit tests for feature sorting and filtering
[Atlas] Restore painting on error return
[Atlas] Add i18n to error messages
[Atlas] Fix minor UI behaviour
[Atlas] Replace the sort direction combobox by a up/down button
Merge pull request #422 from Oslandia/atlas

Feature sorting and filtering for atlas generation