Many singletons have their own instance() method, in which case there is
no need to use ICore::instance() to get access to them.

The instance method has been moved to ICore, so there is generally no
need to include coreimpl.h anymore. Many objects accessed through this
core instance also had their own static instance methods.

Don't display the useless "Other" category, since the categorization of
commands isn't used anywhere (candidate for removal).

Filter out accelerator ampersands, since they aren't interesting here
and reduce the effectiveness of searching.

This makes both source and log files more readable and also prevents
gdb from applying extra quoting of its own.

Requested by danimo

Simple solution after all. This idea got initially dropped early in the
process because it does not handle binary data and using x/x was
way to slow. But since we use only printable characters now thanks
to base64 encoding etc using 'p' becomes feasible again and simplifies
the process vastly as no additional communication channel is needed anymore.

Task:     - none
RevBy:    - Andre

there anymore

Since it's checkable now, "Show Sidebar" is more suitable. Also changed
the interface a bit to allow more than just toggling.

replace ExtensionSystem::PluginManager::instance()->getObject<Core::ICore>() by Core::ICore::instance()

It was getting a bit cluttered without any grouping of the different
actions. Also, the collapse and expand actions have been added, mainly
for discoverability.

on gdb startup)

Now the box will grow larger when files with long filenames are opened.

forward declaration is sufficient.

Dependencies between projects can now be edited in the Projects mode.
You can simply check for each project the projects that it depends on,
and they will be built first. A message box pops up when you try to
create a circular dependency.

Could use some testing.

Task:     235982

Details:  I haven't checked, but according to the cmake sources I need to change this.

Task:     241374
Details:  Clean up what we leave behind, take care to not remove anything else. We run make distclean and remove the files we copies there plus the debug and release directories.

Task:     Reported on mailing list.