IdStory Identity Manager

I have problem with Spring DeferredRequest, in some random cases doesn't work (request is not correctly ended). I don't know why.

Problem with DeferredResult is maybe bug in Spring when thread is created by tomcat. I try to some solutions, but I need more testing.

• Table showloading is disabled now ;)

Merge commit:
https://github.com/bcvsolutions/CzechIdMng/commit/f43b5191a47b0aa8cffb571c7b2f92fb04174113

I added show loading to table, whe no data is loaded (~ on init):
https://github.com/bcvsolutions/CzechIdMng/commit/982d7db8c816cf87d01fb7c91dff4d8ed5a359d3#diff-6a994f64ddd1ead4dc0ae7e1e89bfc96

Functional:
- Good idea, but I don't want developing this now (may be some dashboard long polling could be exist). This is good topic for presentation when quick button from dashboard is used for create the role request, then dashboard is shown after is request is sent to be executed - will be nice to have automatic reload on dashborad too (if it is doable).
- I agree, it is nicer now. When automatic reload is turned off, then old refresh button can be shown to enable manual refresh.
- I added check. When ''ROLE_REQUEST_READ''permission is not given, ''403'' message is shown on identity detail - roles tab (i know, user role defined in wiki requires it, but ... :)).
- Disable of the long polling should be feature could be used in extreme situation (may be never). This is reason why was implemented only on the BE. But OK for our users I implemented check on the FE too. When long polling is disabled, then no request could be called to BE. When long polling is disabled, then toogle button should be hidden (+old refresh button can be shown) - now is rendered and is not possible too toogle on (without message why).
- Yes, it was my intention using Switch button for trun off automatic refresh only on indentity-roles page first. But OK, I implemented this now. For prevent duplicating of code I created longpolling manager on the FE. It was very painful, because agendas are not same and I had many problems with states and requests, but now is done. on system detail on synchronization tab - new toogle button is missing (old refresh button is shown with animation is running).

Code review:
- Added BE: ''PARAMETER_MODIFIED_FROM'' constant should be moved into ''ModifiedFromFilter'' interface (+ javadoc missing).
- BE: Filter for ''ModifiedFromFilter'' can be implement as FilterBuilder => will work for all abstract entities + prevent DRY in toPredicates method (in ''DefaultIdmRoleRequestService'' is implemented a different way than in other places - but i think is correct, should be used on all places (e.g. ''LongPollingManager#getLastTimeStamp'' use the same logic)).
- Removed - good point :-), BE: ''@Query'' annotation from spring repository is forgotten in ''DefaultSysSyncItemLogService#toPredicates''.
- Doc added BE: ''CheckLongPollingResult'' interface - javadoc is missing.
- Authorization added. BE: ''IdmIdentityController#checkUnresolvedRequests'' requires ''ROLE_REQUEST_READ'', but ''IDENTITY_READ'' is required too (by #getDto()).
- I do not want wait to render, I need to send request ASAP. FE: ''IdentityRoles#_checkUnresolvedRequest'' - checkUnresolvedRequest should be called in setState callback (row 109).
- Property was in wiki for version 9.7., I moved it to current dev Doc: configuration property ''idm.pub.app.long-polling.enabled'' missing in documentation.

Done. Beware, I made many changes, especially on the FE! All changes are here:

https://github.com/bcvsolutions/CzechIdMng/commit/eb48f4d9152f92022f003fbc0ee526fd9656f254