ffox bugs: basemap selector
ffox bugs: analysis icons delete/subscribe
Ffox bugs: thresold setting slider CSS
Ffox bugs: thresold setting slider CSS /country pages, global overview
Ffox bug: close threshold button GO/country page
fix: js. event --> e
IE fix: threshold slider country pages
IE fix: threshold slider map
IE fix: select arrow hide
IE fix: IFL checkboxes
Merge pull request #987 from Vizzuality/fix/IE-Ffox-issues

Fix/ie ffox issues