[auth] add captcha to prevent brute force attack
[repo] new-file: fixed 'no focus' bug for ff
[v2] modification for enc repo create
Corrected a typo (Seafle --> Seafile)
Merge pull request #101 from qbi/patch-1

Corrected a typo (Seafle --> Seafile)
Update transifex config
[repo download] add 'repo download button' show option
[repo password] added 'repo_password_min_length' option, modified 'password' for repo create/decrypt
clean up and improved code for 'tabs'; clean up css
clean up code & rm unused files

Conflicts:

	seahub/templates/repo.html
	seahub/templates/snippets/repo_create_form.html
[repo] auto open cur_dir in jstree for mv/cp
[repo] improve json_data construct in jstree for mv/cp
[jstree] only add 'repo_id' attribute for root node
[repo] show cur_path jstree for mv/cp multi dirents
Added option for user to choose server/client encryption
'enc repo setting' improvement; rm 'new-file', file link for enc repo in client_crypto mode
Fixed a few typos
Merge branch 'captcha' of git://github.com/swpd/seahub into swpd-captcha
Use cache to record user login attempts
Merge branch 'swpd-captcha'