Usernames now fetched from database
Changed some @string names for better clarity
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.
In ManageUser fragment is displayed below buttons

The demo fragment was earlier displayed at top
of activity.
Now it is positioned below the edit and delete buttons
Demo fragment replaced by username/password fields

	Username and Password fields added to fragment
	Fragment is displayed at onClick event of Edit button
	Changed text size of Spinner
Few changes in UserDatabase layout

	Added text for userlist
	Spinner alignment changes
Fetching username and password to Editing fragment

	* Created a class UserStructure to access
	  username and password. It implements getters
	  and setters.
	* Activity UserDatabase gets username and
	  password from database and sends them to
	  fragment FragmentEdit