med 'indicator/static/javascripts/load_card.js' to 'card_chart.js
* 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 ??