warmup requests
by default ignore cursor argument for update_query_argument
Merge pull request #151 from joernhees/update_query_argument_default_ignore_cursor

by default ignore cursor argument for update_query_argument
Merge pull request #148 from joernhees/warmup_requests

warmup requests
run.py help for -C mentions pip

related to gae-init/gae-init-docs#59
Merge pull request #152 from joernhees/run_help_pip

run.py help for -C mentions pip
Minor change
make announcements closable
remember closed state in sessionStorage
announcement shown by default and hidden by javascript if closed before
removed unused variable that minification complains about
lessification and coffeefication as requested
Merge pull request #153 from joernhees/closable_announcements

make announcements closable