Re-add facet settings

Required for Eclipse/Virgo to know that the project is a bundle
adding back settings folder for eclipse project
Merge pull request #44 from domenic/gitignore-eclipse

Re-add facet settings
removing .settings file except facet, removes .classpath, updates spring
to 3.1.0 to keep up with frontend update of same version, updates spring
schema reference in config files to 3.1 to keep up with dependency
changes.
removing + character, .project file from .gitignore
added plot metadata info to function node when reading from expression node generated by infowrite (summary)
add cell id to path of object references
Added some metadata plot attributes
Merge branch 'development' of github.com:openworm/org.geppetto.model.neuroml into development
Merge branch 'development' into plotmetadata2functionnode
Removed some code that shouldn't be there until the PR for the plot
metadata is performed
Changed label for connections
Removed unused imports
Update to use the latest jLEMS
Merge branch 'development' of https://github.com/openworm/org.geppetto.model.neuroml.git into development
Merge branch 'development' into plotmetadata2functionnode

Conflicts:
	src/main/java/org/geppetto/model/neuroml/utils/modeltree/PopulateNeuroMLModelTreeUtils.java
Merge pull request #45 from openworm/plotmetadata2functionnode

Plotmetadata2functionnode
Check if the connection has precell and postcell before adding the
connection to the runtimetree
remove pointing to parent
Merge branch 'development' of
https://github.com/openworm/org.geppetto.model.neuroml.git into
development
Merge pull request #46 from openworm/development

development -> master