Resolve "Set default tilesize to 4x4"

Closes #30

See merge request !27

Resolve "Remove non childproof images"

Closes #29

See merge request !26

Resolve "Improve convert pictures options"

Closes #28

See merge request !24

Resolve "Add pictures categories"

Closes #25

See merge request !25

Resolve "Add personal / unlicensed pictures"

Closes #27

See merge request !23

Resolve "Hide tip image on new game"

Closes #24

See merge request !22

Resolve "Show/hide tip image"

Closes #23

See merge request !21

Resolve "Fix images"

Closes #22

See merge request !20

Resolve "Improve images"

Closes #20

See merge request !18

Resolve "Improve global layout"

Closes #17

See merge request !15

Resolve "Improve tiles shuffling"

Closes #19

See merge request !17

Resolve "Add images"

Closes #18

See merge request !16

Resolve "Add check tiles ordering feature"

Closes #7

See merge request !14

Resolve "Improve select image layout"

Closes #9

See merge request !13

Resolve "Allow choose tileset size"

Closes #16

See merge request !12

Resolve "Bump version"

Closes #15

See merge request !11

Resolve "Add images"

Closes #14

See merge request !10

Resolve "Swap tiles on drop"

Closes #13

See merge request !9

Resolve "Add drag-drop / swap feature on tiles"

Closes #6

See merge request !7

Resolve "Upgrade tiles to clean object"

Closes #8

See merge request !5