fix: upload_pathの末尾に/なければ付ける＆Nc2Page.display_flag = 2 (プライベートスペース使用不可)に対応

[akagane99]

NetCommons3/NetCommons3#1398
NetCommons3/NetCommons3#1399

動作確認中です。
問題なければ、マージしようと思ってます。

[coveralls]

Pull Request Test Coverage Report for Build 33

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 73 unchanged lines in 2 files lost coverage.
• Overall coverage remained the same at 0.0%

---

Files with Coverage Reduction	New Missed Lines	%
app/Plugin/Nc2ToNc3/Console/Command/Nc2ToNc3Shell.php	18	0.0%
app/Plugin/Nc2ToNc3/Model/Nc2ToNc3Room.php	55	0.0%

Totals
Change from base Build 29:	0.0%
Covered Lines:	0
Relevant Lines:	11256

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 33

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 73 unchanged lines in 2 files lost coverage.
• Overall coverage remained the same at 0.0%

---

Files with Coverage Reduction	New Missed Lines	%
app/Plugin/Nc2ToNc3/Console/Command/Nc2ToNc3Shell.php	18	0.0%
app/Plugin/Nc2ToNc3/Model/Nc2ToNc3Room.php	55	0.0%

Totals
Change from base Build 29:	0.0%
Covered Lines:	0
Relevant Lines:	11256

---

💛 - Coveralls

[akagane99]

動作確認しました。
マージします。