[Blasq] Context menu for tree view, closes #1300.
[Blasq] Wrapped photos in ActionButton, closes #1298.
[Blasq] Support selecting albums from PhotosView, closes #1299.
[Blasq Vangog] support delete collections
Merge pull request #265 from Maledictus/master

[Blasq Vangog] support delete collections
[LMP MTPSync] Only get storage if not available.
[LMP MTPSync] Asynchronous uploading.
[Util] Filter by all columns, fixes #1308.
Merge branch 'master' of github.com:0xd34df00d/leechcraft
[WP] Avatar download reply result check
[WP] Preventing reply leak
[LMP] IUnmountableSync::uploadProgress().
[LMP MTPSync] Notify about file upload progress.
[LMP] Handle uploadProgress().
[LMP] Handle single file upload progress in UI.
[LMP MTPSync] Prevent leaking callback data.
[WP] Style fixes

TwitterUser::Avatar is Avatar_ now
[WP] Reverting to auto in reply creation
[WP] Removed public data TwitterUser::Avatar_

Fixed misleading signal name
[Util] Added DelayedExecutor class.