bugfix to handle backbone events correctly
user defined aspects v1 in ModelEditor

- ModelEditor dispalyes the user defined aspects and lets the user
switch between them
- partbrowser behaves apsect specific and displays only the items that
can partiticapte in that aspect
- aspect with name 'All' is not allowed to be created by the user
- TODO: ModelEditor instantiation does not handle selected aspect
correctly so far
Merge branch 'master' of https://github.com/webgme/webgme
aspect specific editing in ModelEditor
Merge branch 'master' of https://github.com/webgme/webgme
jquery optimization
jquery optimization
clear and full refresh on aspect change