remember the nodespace in a cookie
remember the zoomFactor in a cookie
get rid of the confusing "currentNodespace"

it's always set to the global "currentNodeSpace" anyway
remove unused viewProperties
fix bug in selection

(selecting a node, then selecting a link failed)
be defensive against cookies w/ outdated nodspaces

since we're saving the nodespace in a cookie we need to default to "Root" if the nodespace from the cookie doesn't exist in the selected nodenet
the frontend expects some return value (not null)
facepalm commit fixes typo m(
Merge pull request #21 from Doik/remember_nodespace

Remember nodeSpace, zoomFactor
temporary fix still borked code
fix & reenable code for drawing compact nodes
fix the invalid-link-filter
Merge branch 'refs/heads/master' into nodenet_sheaves
Merge branch 'refs/heads/master' into nodenet_sheaves_doik
Merge remote-tracking branch 'joscha/nodenet_sheaves' into nodenet_sheaves

Conflicts:
	micropsi_core/nodenet/nodefunctions.py
remember selected sheaf, respect on every redraw

this enables consistent sheaf-views while stepping the nodenet, or zooming in and out
Merge branch 'nodenet_sheaves' of github.com:Doik/micropsi2 into nodenet_sheaves_doik

Conflicts:
	micropsi_core/nodenet/nodefunctions.py
maintain visible selection over redraws/zooming
Better sensor names for structured world shapes
and colors
Merge branch 'master' of github.com:joschabach/micropsi2