Launch browser button added

* New button that opens www.google.com in default web browser
Use username/password from textbox if both filled

* It is a desirable feature to use a username password temporarily.
* Note unless Save button is clicked, it will not be saved for any
  future sessions.
Whitespace fixes, Additions to copyright header
Testing NetworkEngine delays

* Need to figure out a way to return output and handle delay at the same
  time
Added custom buttons, needs refinement
Handle connection error and show message in textview

* No status code was being returned earlier in case of a connection
  error
Handle connection error and show message in textview

* No status code was being returned earlier in case of a connection
  error
Added web browser button and better layout alignment
Whitespace fixes, retabs
Better layout for userdb activity

* Removed constants
* Used relative layouts for horizontal alignment
Merge branch 'button_design' to add bigger buttons

Added bigger, easily accesible buttons
Buttons are:
* OUT: Logout button shown in red
* IN: Login button shown in green
* WEB: Opens Web Browser
Added overall padding, relative padding, moved Manage User

* Moved save and manage user together
* Removed Launch Browser Button
* overall padding of 10dp
* relative padding for different horizontal components
New version release updates v0.5.0
Added demo fragment at clicking edit button

In ManageUsers onClick event of Edit button
creates a demo fragment. Position of fragment
has to not been managed yet.