Added HUD visibility check in persistence and fixed bug in IME.
Updated package to SettingsActivity class.
Corrected class name for supported IME check.
Loaded full-screen settings on TeclaAccessibilityService from preferences.
Added a check for HUD on accessibility event.
Merge pull request #202 from ericwan78/issue-201

fixes #201
Merge pull request #204 from ericwan78/issue-203

fixes #203
Merge branch 'develop' of https://github.com/idrc/tecla-framework into issue-200
Modified preference screen init.