Mixion can now Log into steemit, New theme added, and better parsing method

New Features

• Log into Steemit
  I finally began working on logging into Steemit. Users can now log in with their user name and posting key, these are encrypted in RSA/AES and stored on the physical device. I was struggling a bit with encryption, but then I came accross this awesome library
• Post, comment, upvote
  Now with the posting key securely stored on the device, I can start using the awesome Hive account@steemj by Hive account@dez1337 I created a simple Post directly from Mixion just to test things out.

• New theme, and a better navigation drawer

check it out

• And finally, The Discussion body issue has been fixed
  Discussions are now displayed with human readable text, and images are loaded exactly where they belong. I did this by simply converting all text to Markdown, and parsing the markdown body. This directory contains the library I am using for this. You simply give it any html text and it will convert it to markdown.

• Note:
  These features will not make it to Play Store Beta version yet as I want to ensure that, Logging in, logging out, posting, commenting and upvoting all work fine. This will probably be on the next update.

All code changes for are from Jan 31 - Feb 5

• Verification