updated gradle, updated fabs

updated all deps to newest verion

finally not using flexible adapter beta anymore

updated Android Studio, gradle and android dependencies

reworked Share output text and copy details output text

added functionality to add multiple items after one other

fixed display bug in note preview

fixed actionMode problem with header items

updated android deps and switched to rc4 of flexible adapter

fixed screen orientation change bug

fixed widget bulb bug

Fixed bugs, updated README

fixed drag into empty header bug

fixed widget bugs concerning important items

last changes for live release