Various fixes + post signature is now part of the panel

Various utf8 fixes with ng-bind-html.

Also added the signature as part of the post panel so it looks a bit
cleaner.
Updated post to only send encodedBody

This change was made to reflect the change in core where posts only
accept encodedBody instead of body. All calls from angular now only send
a post object with the encodedBody populated.
Moved Login into Modal. Created generic modal directive
* Login is now moved into a modal window
* Modal directive uses a modal tag <modal></modal>
* Modals can be defined as:
<modal class="tiny" show="HeaderCtrl.show">
  <strong>Hello World</strong>
</modal>
* Controller must implement a close and open:
    this.show = false;
    this.openLoginModal = function() {
      ctrl.show = true;
    };

    this.closeLoginModal = function() {
      ctrl.show = false;
    };
Updated category editor route to use resolve.
* Using resolve to grab all boards and categorized boards
Updated the editor to handle foreign langs + walls of text

Added a few extra steps to the input parsing process. It now escapes all
special characters for security but the & character is added back in to
support unicode characters. Then each character is checked to see if it
higher than 127 in the character encoding, if it is, then the character
is converted into it's decimal form for saving. Finally the BBCode
parser is run to convert all BBcode into html. This parsed text is then
shown to the user. The raw text (everything minus the BBCode parsing) is
what's saved to scope which is eventually saved to the backend.

Also, a debounce was added to the onChange binding in the editor. This
was added because for large amounts of text, the constant parsing
overloaded the browser and could cause it to crash. The debounce offsets
this by only initiating the parser 250 milliseconds after the last
keypress. Any keypress within the 250 millisecond period just resets the
debounce for another 250 milliseconds.
Added ngAnimation

Added the ngAnimation module to add a fast fade-in animation to most
page changes.
Removed moderators

Removed all html that had any mention of moderators from the code.