login page created
Added a new line
ColumbusLand website link is implemented
Merge pull request #1 from dayouxia79100/login

merge login and columbus land webview
refactored the code, changed the webview fragment
added progress wheel to webview
cleaned up code, deleted unused files.
added menu to activity
changed login to a dialog
added circular progress bar and enabled up navigation for metaio scanner activity
added welcome page
added a helper class for IMR connection
json file path fixed