tts: scroll the page when the next selected sentence is too close to the bottom#355

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teleshoes wants to merge 3 commits intobuggins:masterfrom

teleshoes:selection-text-tweaks

Commits on Mar 13, 2022

selection: in scroll mode, move pos to 1 line from top/bottom instead of 2 lines
teleshoes
committed
selection: force pos move in scroll mode if end of selection is out of range
teleshoes
committed
selection: scroll page if selection is in the bottom 150px of the screen
teleshoes
committed