Edit-Links + FA icons on board_index

Adding edit links for board and project to board_index and putting some nice FA icons before board links on board_index.

Edit:
Maybe I should write something about why I created the PR in the first place...
I constantly was annoyed be the click amounts to do before I can edit a config for a board or a project. I came up with the simple idea to just add short links in the form of a cog for the currently displayed project and board, hoping the links stay out of peoples ways. The FA icons are just my personal taste... I like FA icons before / as links as important as the board links.