Account and password field shares the same validation as cell name field

[dixonsiu]

All three fields should have different validation according to the API specifications.

・Cell Name →桁数：1～128 　文字種:半角英数字と-(半角ハイフン)と(半角アンダーバー) 　ただし、先頭文字に(半角アンダーバー)と:(コロン)は指定不可

・Account Name →桁数：1～128 　文字種:半角英数字と下記半角記号 　-_!$*=^`{|}~.@ 　ただし、先頭文字に半角記号は指定不可

・Password →文字数：6～32文字 　文字種:半角英数字と-(半角ハイフン)と_(半角アンダーバー)

[SawamiWataru]

Describe the regular expression used in personium-core.

• Cell Name ^[a-zA-Z0-9][a-zA-Z0-9-_]{0,127}$

• Account Name ^[a-zA-Z0-9][a-zA-Z0-9-_!$*=^`{|}~.@]{0,127}$

• Password ^[a-zA-Z0-9-_]{0,}$ (Checking 6 to 32 letters is carried out separately.)