Merge branch 'slurm-note' into 'master'

Slurm note

See merge request sccs/docs.it4i.cz!432

docs.it4i/general/resource_allocation_and_job_execution.md

 # Resource Allocation and Job Execution
 
+!!! important "Barbora migrating to Slurm"
+    Starting July 17., we are migrating the Barbora's workload manager **from PBS to Slurm**.
+    For more information on how to submit jobs in Slurm, see the [Slurm Job Submission and Execution][8] section. 
+
 To run a [job][1], computational resources for this particular job must be allocated. This is done via the [PBS Pro][b] job workload manager software, which distributes workloads across the supercomputer. Extensive information about PBS Pro can be found in the [PBS Pro User's Guide][2].
 
 ## Resource Allocation Policy
@@ -46,6 +50,7 @@ Red more on the [Vnode Allocation][7] page.
 [5]: job-submission-and-execution.md
 [6]: capacity-computing.md
 [7]: vnode-allocation.md
+[8]: slurm-job-submission-and-execution.md
 
 [a]: https://extranet.it4i.cz/rsweb/karolina/queues
 [b]: https://www.altair.com/pbs-works/

docs.it4i/general/slurm-job-submission-and-execution.md

-# Job Submission and Execution
+# Slurm Job Submission and Execution
 
 !!! Important
     Slurm scheduler is currently in use on Complementary System only.
+    Starting July 17., Slurm will be in use on the Barbora cluster.
 
 ## Slurm Introduction