[GUI]: Some improvements

[FafnerKeyZee]

Is your feature request related to a problem? Please describe.

• Adapt size of /capture to don't have to scroll
• Allow multiple submission from capture page (bulk ?)
• Group all menu to don't have to look at Up, Left and down/right side :)
• Colors, colors and colors
• Add possibility to reset / disable contextualization
• Find a way to nicely show very very long url :) Looks like it's a bug with chrome :p
  
  with firefox all is fine:
  
• Allow to select all urls in subsequent capture, without having to tick them one per one

Describe the solution you'd like

• Drink more coffee

Describe alternatives you've considered

No response

Additional context

No response

[Rafiot]

Group the menus:

They are like that now is because this area of the page is not used much due to the format of the tree.

• all the menu entries vertically on the left: need to move the starting point of the tree to the right so it doesn't overlap. We can, but then, the users need to scroll right more.
• All the menus on the top, need to move the tree down, more scrolling
• Drop down for the menu: maybe, but then you need to click before you see them, this is also not great
• The legend (bottom right) will stay where it is, it makes no sense to merge it in the menu.

Suggestions are welcome.

Colors

Screenshots? Which colors, where, what is the problem etc.

Other points

Yep, makes sense.

[Rafiot]

The last remaining issue is related to the contextualization, this is the reference: #470