improved the display position of 'detail_card_info'
* indicator/templates/indicator/SheetDefault.html:
  destroy 'qtip' when close card

* added new app 'apps/sfaccount'
* implemented 'signup' and 'activate' functions
* implemented async sending activation mail
  (using 'django-celery' and 'redis')
* moved 'registration/*' templates to 'sfaccount/templates'

* implemented 'password_change' function:
  o password_change
  o password_change_done
* implemented 'password_reset' function
  o password_reset
  o password_reset_done
  o password_reset_confirm
  o password_reset_complete
  o re-write 'sfaccount.fomrs.SFPasswordResetForm'
  o re-write 'sfaccount.views.password_reset_view'
* improved 'sfaccount.functional' send mail functions
  o to send 'multipart' mail

* added 'README.txt'

* added app 'apps/recommend':
  for comparing with the SCI papers and then recommending
  most related papers for user.

  employed in adding/modifying record data to provide validation info;
* added 'ajax_modify_record' url; removed 'ajax_edit_history_data' url;
* added 'indicator.views.ajax_modify_record()' for 'EditHistoryData.html';
* renamed 'indicator.views.add_recordhistory()' to 'add_recordhistory_view()';
* added 'indicator.tools.add_recordhistory()';
* added 'pytz' to 'env/requirements.pip';
  'pytz' to handle timezone in python & django (recommended)

* set Highcharts global options in 'card_chart.js'
* 'indicator/templates/indicator/SheetDefault.html':
  added js function 'chart_getdata_draw()' to draw chart for card
* improved 'indicator.views.ajax_get_card_data_chart()'
* implemented drawing chart for 'FLOAT_TYPE' and 'RANGE_TYPE' indicators
* added datetime plugin 'momentjs':
  'indicator/static/plugins/moment/', version 2.1.0
* 'indicator/templates/indicator/NewDeleteIndex.html':
  added link button to goto 'indicator_status' SheetDefault.html page
* added option 'useHTML: true' for Highcharts; improved the display
  style of ylabels, if value >9999, then show in exponential notation
* improved drawing of 'detail_chart', and the 'detail_card_info'
* moved js global var to 'SheetDefault.html';
  renamed var 'card_detail_id' to 'detail_card_id'
* fixed js local variables problem; added 'var' keyword
* added check of 'date' for 'indicator.models.IndicatorRecord'
* ThickBox: removed param 'no1_title' from thickbox popup page's url
  placed the param 'card_id' before 'TB_iframe'
* changed to use 'ANNOTATION_TYPES' for 'sciblog.models.BlogAnnotation'
* improved 'indicator/templates/indicator/popup/IndexDesc.html'
  improved 'indicator.views.indicator_indexdesc()'
* added 'sympy' to 'env/requirements.pip'

TODO:
* BlogAnnotation: 'get_absolute_url()' -> 'IndexDesc: go_library_btn'
* detail_card_info: data table
* Data input/edit form, and validate & submit
* Highcharts xAxis labels problem ??