Changed the dependency on jLEMS so that also the API version of it will
satisfy it.
Add bundle nature
Reverting to currently used version of jlems
Adapt to new jlems version
Some refactor for easing geppetto call
Minor change to display nodes in a certain order
Reverting agian to fixed jLEMS version for export development branch

@adrianq, @tarelli, still working on integrating api branch into
development. Until then you should work in a branch of export using your
preferred version of jlems. Too many versions of jlems floating about
for now to allow this flexibility in development branch...
Some work in order to diferentiate between function and text
Merge branch 'development' of github.com:NeuroML/org.neuroml.export into development
Change test in order to adapt to new class expressionode
Added Metadata info about how to plot to expression node
Updates to string output of generated channel info

e.g.
     Gates:
        gate m:
            instances: 3
            forward rate: 1000 * (v - (-0.04))/0.01 / ( 1 - exp(-(v -
(-0.04)) / 0.01))
            reverse rate: 4000 * exp((v - (-0.06))/-0.02)
        gate h:
            instances: 1
            forward rate: 70 * exp((v - (-0.06))/-0.02)
            reverse rate: 1000 /(1 + exp((v - (-0.04))/0.01))

@adrianq unfortunately the strings used in InfoTreeCreatorTest.java
needs to be updated every time the structure of the generated string is
updated, but the error output from that class is helpful for finding the
exact line to update.
Using latest jlems development branch

@tarelli, @adrianq this should be fine now to use in Geppetto dev, as it
uses jlems with the api changes
Minor change to export of geppetto
Added plot metadata information to function node and some minor changes
Improvements to generated Brian scripts:

Use of matplotlib
Allowing a -nogui option to just run simulation & not show plots
Update format for function node so we can plot expressions
Merge branch 'development' of github.com:NeuroML/org.neuroml.export into development
Change test in order to adapt to new number format
Merge branch 'development' into experimental

* development:
Change test in order to adapt to new number format
Update format for function node so we can plot expressions
Improvements to generated Brian scripts:
Added plot metadata information to function node and some minor
changes
Minor change to export of geppetto
Using latest jlems development branch
Updates to string output of generated channel info
Added Metadata info about how to plot to expression node
Change test in order to adapt to new class expressionode
Some work in order to diferentiate between function and text
Reverting agian to fixed jLEMS version for export development branch
Minor change to display nodes in a certain order
Some refactor for easing geppetto call
Adapt to new jlems version
Reverting to currently used version of jlems
Add bundle nature
Changed the dependency on jLEMS so that also the API version of it
will satisfy it.