new plugin: cross links

this plugin colors links red if they are crossing a drawnline.
any yellow if they are inside a drawn polygon.
(requires DrawTools)
cross-links: replaced intersection approximation

(inside polygons has to be rewritten)
cross-links: moved to extra layer
cross-links: better layer-order
cross-links: refactored collision test
cross-links: replaced direct hooks by events
cross-links: process collision links only once (and delete if needed)
cross-link: fixed delete links
cross-links: fixed create hook
cross-links: always bring layer to front
website: updated for latest release (overdue 'git add')
Merge branch 'master' of https://github.com/jonatkins/ingress-intel-total-conversion
Merge branch 'master' of https://github.com/McBen/ingress-intel-total-conversion into McBen-master
Merge branch 'McBen-master'
fix description in new plugin (macros, and modified the text. marked as 'EXPERIMENTAL' for now until i've done additional work)
bump versions on test builds
cross_links: switch to 3 digit version numbers, as used for everything else
cross links plugin
- fixed indentation
- fixed off-by-one error on polygons
- made lines dashed, and less opaque - so it's easier to see the colour of the link they're drawn on
cross links plugin - complete rewrite of the geodesic intersection code. seems correct now, but still needs testing
opacity 0.5 was a bit too transparent - 0.7 is better, while not quite as harsh as 0.8