キーフレーズ管理画面の作成。キーフレーズ一覧に関してはスクロールビューで妥協しました。closes #24

modify:   client/Topick/res/layout/fragment_management_key_phrase_layout.xml
modify:   client/Topick/res/values/color.xml
modify:   client/Topick/res/values/strings.xml
modify:   client/Topick/src/com/kosenventure/sansan/others/KeyPhraseListView.java
modify:   client/Topick/src/com/kosenventure/sansan/topick/ManagementKeyPhraseFragment.java