Merge pull request #175 from jorgesilva/develop

Complete hotfix to avoid calls on null keyboard.
Activate Speakerphone on outgoing calls

Only if enabled in Prefrences
Turn on Speaker only when checked in prefs
Merge pull request #176 from sagarchandarana123/issue-156

Activate Speakerphone on outgoing calls. Fixes #156
Unbind from SEP before stopping Tecla Shield service.

Fixes #169
Merge pull request #179 from jorgesilva/issue-169

Unbind from SEP before stopping Tecla Shield service.
Add french, spanish and dutch translations. Fixes #124
Merge pull request #180 from jorgesilva/french-translation

Add french, spanish and dutch translations. Fixes #124