Merge remote-tracking branch 'upstream/master'
Cleanup
Fixed cp
Merge pull request #48 from purplefish32/cleanup

Cleanup
Merge remote-tracking branch 'upstream/master'
add addchild feature
Merge pull request #49 from arnaudbey/hotfix

Hotfix &  add addchild feature :)
Adding relations between AbstractWorkspace, AbstractRessource,
ConcreteRessource and Step
Merge pull request #50 from ALouis38/entitiesrelation

Adding relations between AbstractWorkspace, AbstractRessource, ConcreteRessource and Step
add step edit feature and fix some step manipulation bug
Merge pull request #51 from arnaudbey/step_front_edit

add step edit feature and fix some step manipulation bug
some fixes on tree
Merge pull request #52 from arnaudbey/tree_fixes

some fixes on tree
remove ul and li min-height and padding bottom. cause some issues in d&d
Merge pull request #53 from arnaudbey/tree

remove ul and li min-height and padding bottom. cause some issues in d&d
fix save containing pattern steps
fixes #54
Merge pull request #55 from arnaudbey/tree

fix save containing pattern steps
Fixed broken HTML
Merge pull request #56 from purplefish32/cleanup

Fixed broken HTML
Added timestamps + slugs on a bunch of entities + changed some table prefixes