Version 1.5.0
Use Gulp instead of Grunt.
Running dev_appserver and livereload together.
Simplify code.
Simplify 'watch' task.
Runnin 'run.py -s', 'run.py -w' and livereload together.
Remove overrides for lipis/nprogress.
Used snake_case for variables.
Added "-w" argument and removed unused variable.
Now paths.root/static is a global variables.