add 'user needs' type
create solution in user needs page
GNB select solution
GNB fix
create solution with work groups
ui for 'user needs' which is chosen for new solution
add alertify.js
Cento.DragAndDrop from drag and drop file attachemtns
fix drag and drop events
Merge pull request #33 from eskim/user-needs

working on 'User Needs' page
fix modeling filter
home -> solutions, related ideation on modeling perspective