right-click menu in the main text widget

[Akuli]

Porcupine has a few things that are applied in the main widget to selected text or at the cursor location:

• Edit --> Comment block
• Edit --> Fold
• Edit --> Jump to definition
• Edit --> Sort lines
• Edit --> Anchors --> Add or remove on this line
• Tools --> Search selected text on google
• Everything in the Pastebin menu

It would be nice if all these were also accessible with a simple right-click, instead of having to browse through the menus at top. This should be implemented in a way where plugins can add their own items to the right-click menu easily.

[benjamin-kirkbride]

#1319 helps with this, as it makes it so the options aren't either "it's in the right click menu", or "you have to hunt through the top menu"

[Akuli]

Also cut/copy/paste because sometimes I'm feeling really lazy and I already have mouse in hand