import SlidingMenu library

commit ba63620417868154ba619d81fd07ef27661bed98
add FileChoosedListner in the aFileChooser library
Add SlidingMenu as File chooser
change to light theme
fixed sliding close missing vim tab
rename methods in Exec and VimTouch
use sliding file chooser for menu options
hide tab correct after sliding menu closed
add Sliding menu save option
Fix #53 zoom view might cut edge word
chdir HOME by default
Fixed #51 Unable to scroll vertical quickbar
Fixed #49 add font size preference to 288 pt