PLoD reaction component

[gyachdav]

Replacing #477.

We would like to start making our pages more interactive and encourage FB posts.

On the character page If character is alive and has a PLOD:

• enable reactions under the tombstones: the reactions are FB style reactions for like, love, laugh, wow, sad, angry.
• reactions should be stored in a dedicated data store such as Redis.
• Upon selection of a reaction, show a pop up that with a pre-made FB post based on reaction, character name and PLoD value. for instance if a "like" was selected then the post text can be: "Nice, character_name is safe (if PLoD<50%). #gotshow". Talk with @sacdallago and @gyachdav for more text ideas.
• show the reactions added by users. when hovered over show the count for each reaction.

Since the seminar is now over, I am not assigning anyone yet, please let me know who wants to take it.