Bug fixes

Fixed the following bugs:
1. If we have multiple controls on the same activity, with different texts, whenever the activity is recreated(on rotation for example), all the controls take the same text
2. When we have multiple controls on the same activity, and set texts to each one programmatically, all hint text views have an alpha of 1 - only the currently selected one should have alpha = 1, the rest should have alpha = 0.33
Utils class for generating unique view ids.
Updated imports.
Merge pull request #19 from andreidd/master

Small bug fixes