App version updated to 24

App version updated to 24

Removed loading preview image to improve

Nextcloud patch to remove loading images to improve performance

Performance issue improved

In this merge applied nexcloud patch to improve performance. Earlier all activities loading once . On scroll activities getting load after nextcloud patch

Fix - 354-Pending share manual reload issue

Fix - 354-Pending share manual reload issue

Performance improvement

Below performance changes done

1. Client side button onclick disable and enable changes, ajaxified data reload after response
2. Server side - Cache lock applied

nmc01.00.00

Current stable version of master