Merge pull request #814 from rsvato/agents

[RJA-1785] [fix] - Overlay to block the page while request is in progress
[RJA-1792][fix]: email notification plugin should not send authentication in case of username is empty.
Merge pull request #815 from ddurnev/agents

[RJA-1792][fix]: email notification plugin should not send authentication
Merge pull request #816 from rsvato/agents

[DOC-XXX][fix] - Readonly with access to config may post to /projects/x/...
Merge pull request #817 from rsvato/agents

[DOC-XXX][fix] - Access to partial call for readonly
[RJA-645][fix] envConfigId to be mandatory parameter for workflow definitions
[RJA-1797][fix] Empty Projects menu when go to System settings and click F5
Merge pull request #818 from bugzmanov/fb-remoting

[RJA-645][fix] envConfigId to be mandatory parameter for workflow defini...
[RJA-xxx][fix] fixing cuc tests
Merge pull request #819 from bugzmanov/fb-remoting

[RJA-xxx][fix] fixing cuc tests
[RJA-1709][feature]: expose remote gateway calls metrics
Merge pull request #820 from ddurnev/agents

[RJA-1709][feature]: expose remote gateway calls metrics
[RJA-xxx][fix]: remove SNAPSHOT dependencies.
Merge pull request #821 from ddurnev/agents

[RJA-xxx][fix]: remove SNAPSHOT dependencies.
[RJA-xxx][fix] config access bug
[RJA-1794][fx] Spring security rules fix
Merge pull request #822 from bugzmanov/fb-remoting

[RJA-xxx][fix] config access bug
[RJA-1801][fix] Project Admin is not able to run workflows
Merge pull request #823 from bugzmanov/fb-remoting

[RJA-1801][fix] Project Admin is not able to run workflows
[RJA-1706][feature] expose agents and database health