Merge pull request #302 from rmehta/master

[permission model] Redesign for webnotes/erpnext#1093
[minor] fixed erpnext.org urls
Merge pull request #316 from anandpdoshi/hotfix

[minor] fixed erpnext.org urls
[minor] get system managers sends formatted email address
[minor] move static data middleware to development serve command
handle session stopped
[minor] do not serve statics if NO_STATICS in environ
Merge pull request #317 from anandpdoshi/hotfix

[minor] get system managers sends formatted email address
[minor] lock tabSeries during update
[bugfix] [minor] [translate] update requests api
Merge pull request #309 from pdvyas/static-middleware

Fixes to WSGI application callable
[minor] add locking to scheduler
[prev/back] Added button back webnotes/erpnext#1113
[minor] fix file lock booboo
[minor] send 404 if POST request non cmd (ie website)
specify max_email_size in conf.py to limit size of each email pulled using POP and the total size of all emails pulled in a single scheduler call
[minor] contain update password page
[minor] wnf.py --mysql call with option -A for quick start
Merge pull request #325 from anandpdoshi/pop-mail-size

Limit POP mail pulling based on size
Merge pull request #322 from rmehta/prev-next-btn

[prev/back] Added button back webnotes/erpnext#1113