allow deletion of last conversation post (#59)
use peek instead of last on conversation vector

peek is much more efficient for large vectors
remove conversations with only one status
Updated statuses.css as discussed in #51

In #51 we discussed to add a left margin to .content and .meta to preserve a consistent indention. In case avatar images can't be loaded `overflow: hidden;` will prevent alternative texts from interfering with status messages.
modify 'last post in conversation' logic

1. Instead of checking to see whether a post is the last in the
conversation, check to see whether it has any replies. Otherwise, if I
respond to a post, and then someone else responds to the same post, I
can no longer delete my status.

2. Move all the logic about whether a user can delete a given post to
the same place. This a) simplifies the view logic, and b) allows us
to skip checking every status's `in-reply-to` field if it's unnecessary
(because if the user isn't the author, it can't be deleted anyway).
Merge pull request #60 from johnswanson/master

allow deletion of last conversation post (#59)
Merge pull request #62 from aheusingfeld/innoq51

Updated statuses.css as discussed in #51
fixed typo
Display last commit ID on info page
Only display unescaped request in :dev mode, change default to :prod (temp fix for JS injection vulnerability)
added link to own posts into navigation on the right side
add link to user profile with externalized profile url
Fixed #58: Fix UI's responsive behaviour

- upgraded to Bootstrap 3.2
- removed bootstrap-responsive
- optimized UX on mobile devices (iPhone 6+)
- fixed display bug of the charCounter
- removed unused resources