Merge pull request #50 from thehogfather/emulink-commented

 Fixed issue #48
Merge pull request #51 from thehogfather/emulink-commented

Changed approach in processing Tag, further details in comments
minor changes to improve code. File statemachine.js: removed variable defaultTransition and introduced a new editor mode ADD_DEFAULT_TRANSITION; improved rendering of default transition. File state_machine.css: removed red border from toolbar. File maincontent.handlebars: reorganised button position to group together buttons for editing nodes and buttons for editing transitions
Merge pull request #52 from thehogfather/emulink-commented

[Emulink] Now, When a condition or a transition action is added tags are properly modified; parseSpecification now supports condition and transition action
Merge pull request #55 from thehogfather/emulink-commented

[Emulink] Improved 'parseToFindDiagramSpecificationInconsistency'
Merge pull request #56 from thehogfather/emulink-commented

Improved checkConsistenceTransFunction()
[Emulink] Added 'delete node and edges feature', minor improvements about button disabling