fix py2 style prints
praytime plugin: fix Esfahan's name
add ubuntu-style svg tray icons
add link to 183amir/persian-calendar in authors file
jalali.py: clean, fix style and remove unnecessary calculations
preferences -> tray icon file chooser dialog -> Revert button
FileChooserPrefItem: change Open button to OK
change "Tray Icon" to "Status Icon"
move pixmaps/tray-*.svg to status-icons/
remove themes/ directory
translate Icon in fa.po
cleaning json_utils.py
add core.useAsciiJson = False
some cleaning and micro-optimization for startup time
merge branch next into py3
fix some pygi incompatibilities
add TWO_BUTTON_PRESS for py3 compatibility
merge branch next into py3
fixes in MultiSpinButton._button_press, now I get Segmentation fault