Add profileHandler.php:
	each keyword submittions will be treat as a profile for a the user.

modify recommendList.php:
	modify it to fit the query for the schema of UserProfile
AcitivitySuggestion/keywordHandler.php:
	modify input output variable. handle the idf value of each keyword

AcitivitySuggestion/profileHandler.php:
	change weighting

AcitivitySuggestion/utility.php:
	add default value
AcitivitySuggestion/AcitvityWordHandler.php:
	save or get the term (word or keyword) and its tf value for a spceific activity
ActivitySuggestion/userProfile: create a php class for UserProfile. Move code from profileHandler.php to  class UserProfile

ActiivitySuggestion/profileHandler.php, add get operation
re-construct the php code in ActivitySuggestion/

Add 
activityCheck.php (check if the activity in db or not)
activityGet.php (search activity db)
solrSearchHandler (search with solr)
PhpClass/activity.php (provide activity db request)
PhpClass/solr.php (create json interface of solr server)
SimpleActivityInsertDev.php (change get field to post field, solve the URI length limitation)

Modify
profileHander.php (modify the code structure)
utility.php (add constant and function)

Move
move HttpClient.class.php into subfolder PhpLib/
move simple_html_dom.php into subfolder PhpLib/
move userProfile.php into subfolder PhpClass/
rename recommendList.php to recommendListHandler.php