improve loading times of studies

[antgonza]

No description provided.

[coveralls]

coverage: 92.841% (-0.001%) from 92.842%
when pulling f58de06 on antgonza:improve-loading-times
into 379caa5 on qiita-spots:dev.

[antgonza]

I deployed this PR in qiita-rc and here are some times for comparison:

• qiita (12 secs):

[I 240126 06:49:49 web:2161] 200 GET /study/description/10317 (127.0.0.1) 4605.34ms
[I 240126 06:49:53 web:2161] 200 GET /study/description/data_type_menu/?study_id=10317 (127.0.0.1) 3099.71ms
[I 240126 06:49:54 web:2161] 200 GET /study/description/baseinfo/?study_id=10317 (127.0.0.1) 4378.46ms

• qiita-rc same version than in qiita (13.2 secs):

[I 240126 14:23:22 web:2161] 200 GET /study/description/10317 (127.0.0.1) 4541.17ms
[I 240126 14:23:27 web:2161] 200 GET /study/description/data_type_menu/?study_id=10317 (127.0.0.1) 3688.98ms
[I 240126 14:23:29 web:2161] 200 GET /study/description/baseinfo/?study_id=10317 (127.0.0.1) 5017.63ms

• this version (6.3 secs):

[I 240129 09:20:10 web:2161] 304 GET /study/description/10317 (127.0.0.1) 2414.34ms
[I 240129 09:20:11 web:2161] 304 GET /study/description/data_type_menu/?study_id=10317 (127.0.0.1) 973.19ms
[I 240129 09:20:13 web:2161] 200 GET /study/description/baseinfo/?study_id=10317 (127.0.0.1) 2961.27ms

[charles-cowart]

Looks good.