[enh] start to pass get arguments to filter on source
[enh] allow to exclude sources in get parameter
[mod] really return a list of words for tags
[enh] filtering api do everything needed on get parameters
[mod] directly pass the queryset
[enh] yay, have a frontend js object that contains the current state of the filtering options
[enh] prepare field to update the filterbar according to the urls
[mod] avoid global stuff because js sucks
[enh] finally, manage to update the filterbar item style according to the url
[mod] set state on filter options
[mod] DRY
[enh] when clicked, a fitler button change of state

qsd
[mod] refactor
[fix] filter doing stuff it shouldn't be doing
[mod] DRY
[enh] update default_filters_values global state
[enh] yay, update the url using history api \o/
[mod] update FAQ on 'Can I submit an event?'
[fix] strings are a bit strange in js
[mod] extract url generation part from the url updating function