If a project does not have a title (is an empty string) the Project Preview item is thinner. Consider either a default display name if no title exists or an additional div in the Project Preview's label with a min-height.

This will allow to link tags like #class_a to a students.
Later we will be able to filter users using these tags.

For now, let's allow only the moderators to view the tags (not even the user himself).
This will allow the moderator to create private tags such as #fast_student or #needs_more_attention

We have openpose v1.5.1 submodule on our codebase, but recent release of Openpose v1.6.0 breaks our Docker build.

Error log:

Step 16/28 : RUN cmake /openpose && make -j 8 && make install
**OMITTED**
-- Found glog    (include: /usr/include, library: /usr/lib/x86_64-linux-gnu/libglog.so)
-- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found version "3.0.0")
-- 

Currently, subjects are represented as []strings instead of a struct which has [these keys][1].

Doing this will allow us to eliminate the [change_map_structure][2] step from the process. The conversion from []string to the struct can be done [here][3], by iterating over each element of dep_val.Subjects and assigning it to the appropriate field of the struct. Validations can also be