Keyboard Issue & Open/Save Issue resolved.

[libtiff]

Keyboard Issue bug that was appearing in the presentation is now resolved. The keyboard appears only when user enters editable area and you have to close it in order to access the presentation button.

Open/Save Issue: Seperated the 2 functions into two separated menu options (Open , Save) Set Open to "Intent.ACTION_OPEN_DOCUMENT" and created another function savedoc() which uses the "Intent.ACTION_CREATE_DOCUMENT"