fixed incorrect default colors.
Added styling to character edit.

Bootstrap-ified the character edit page, as well as cleaning up some of the
functionality; now we default to the default gravatar token, we load the
character edit page when we make a new character, and we load the main
map page when we save or cancel.
added image to character list.
added ability to click portrait to change image

When using dropbox, we turn the image into a clickable button, so that
we can let the user click it to change their portrait; something that is
common on sites that let you select an avatar. For gravatar, we don't
support that, as there's no corrilary.
Change requested size of gravatar image to 200x200

Now it is the same as the size from dropbox. This prevents the portait
from looking pixelated.
Removed filename, and instead put in helpful text.

Now we simply say, 'Click to change image' instead of the file name.
Also removed the button on the image.
Merge pull request #53 from lordnull/character_page_cleanup

Character page improvements