fix getValidChilrenTypes in GMEConcepts

getMETAAspectMergedValidChildrenTypes
performance fix

remove unnecessary _client.getPointerMeta(childID,
CONSTANTS.POINTER_SOURCE) &&
_client.getPointerMeta(childID, CONSTANTS.POINTER_TARGET) &&
calls because of performance issue
getChildrenRelIds bugfix - inheritance...
bug fix - overlay copy/modification now fixed -
bug fix in copyNode and moveNode functions
Bezier linestyle on a per-line basis
do not try to calcualte crossing points if other conenction is bezier
bugfix - wrong locking was corrected (pop/shift confuse)
now creating project with authentication/authorization support works fine
Merge branch 'demo' of https://github.com/webgme/webgme into demo
refactor Projects dialog's layout
Bezier control point snap to vertical and horizontal lines
bugfix of segment point creation/edition
Merge branch 'demo' into develop-r