fix: Check if conn is set before trying to access it (in form.field.ctopo) - fix #174
fix: Resize sigma container before drawing it (fix #173)
fix: JavaScript error in widgets.weather.brick and add requirements to widgets.weather.weather
fix: add requirements to the Stream Widget and update constructor
Revert "fix: JavaScript error in widgets.weather.brick and add requirements to widgets.weather.weather"

Temporary fix while developping the new webcore minimizer.
add: Dependencies handling in webcore_minizer (totally rewritten) ; fix: Re-introduce fix reverted previously ; add: Dependency informations to some JS files
fix: Improve dependencies handling of webcore_minizer and add some other required dependencies
update: Add dependency informations in all JS file for webcore_minimizer
fix: Data sorting in Weather widget for PDF export
fix: Custom label for line_graph/bar_graph
fix: bug on schedule view that prevent list to be displayed
Grid objects export done and import button displayed
Import export works now
added new class dependency for import export system
fix: index.min.html doesn't include minified canopsis.js (was modified for debug, should not have been pushed)
merge develop in TimeSeries