Reviewed-by: dt

Task-number: QTCREATORBUG-2984
Reviewed-by: dt

Clean icore.h.

- Unexport Core::Internal::MainWindow and remove its includes.
- Move RssFetcher from Core::Internal to Core.
- Unexport CopyTaskHandler.
- Move TextEditor's completion support and Refactor Overlay
  helper classes from TextEditor::Internal to TextEditor as they
  are exported.
- Move internal BaseTextBlockSelection into private header.
- Unexport TextEditorOverlay as they are not used.

Also center images, don't scale, and be less jumpy on startup

Reviewed-By: con

Reviewed-By: con

In Debugger and WelcomePageWidget.

Reviewed-by: Daniel Molkentin <daniel.molkentin@trolltech.com>

When choosing an example from the welcome screen and the user
cancels loading the project:
 * Do not switch to edit mode
 * Do not load main.cpp
 * Do not pop up help

Task-number: QTCREATORBUG-2774
Reviewed-by: Daniel Molkentin

QML examples are now read like any other Qt example, but still get their
own dropdown box.

Advantages:   Less code, proper naming, also loads the help if available
Disadvantage: Only contains a few examples, instead of all. We now
              trust whoever made the selection for Qt Demo.

Reviewed-by: con

Task-Number: QTCREATORBUG-2587

Task-Number: QTCREATORBUG-1769

This incorporates the last hunk of qt-creator/merge_requests/180 by Nikita V.

Task-number: QTCREATORBUG-2454

- Move RSSFetcher to CorePlugin
- Rename RSSFetcher to RssFetcher
- Make RssFetcher more generic, allow multiple sources to be fetched
- Introduce Featured Items on Getting Started page
- Introduce dummy entry for Mobile examples, needs implementation once they are ready

And make use of it to accept on the command line the patterns:
"filename" "+45", "filename" ":23", "filename:12" and "filename+42"

Task-Nr: QTCREATORBUG-2428

Readd a few mode switchings that I accidentally removed.

Task-Nr: QTCREATORBUG-2405

(cherry picked from commit c3649d4f)

Using more *::Constants::ICON_* where it makes sense and
wrapping the file names into QLatin1String where they were
missing.

The increased usage of the ICON constants needed a few more
cross plugin includes of *constants.h, here and there.
I think that it is OK, since the dependencies were alredy there
icon resource wise.

Move open project dialog handling into ProjectExplorer and make it
use its list of project file patterns. Same in Checkout wizards.

Task-number: QTCREATORBUG-1759
Reviewed-by: dt

 - lessens open file handles
 - improves help plugin startup further

Task-number: QTCREATORBUG-337
Reviewed-by: ck

This reverts commit 5234c775 and 21065291.

Task-number: QTCREATORBUG-1571
Reviewed-by: Leena Miettinen

To get QML functionality back, export QTCREATOR_WITH_QML before
running qmake

Reviewed-by: Kai Koehne

Reviewed-by: Leena Miettinen

Reviewed-by: Leena Miettinen

This is not only a waste of ressources, but breaks a check later on
which tries to load the QML examples from Creators ressource path
if no QML capable Qt version is found (included with Creator packages)

Reviewed-by: dt

Reviewed-by: dt

We already have it in the projects mode so we might as well
use the same in "Getting Started".

Reviewed-by: danimo

By popular request I added a "open project" option.
We don't currently have a way of differentiating project types
from other files so I had to hardcode .pro and .qmlproject
for now.

Themed icons was also added to the new and open buttons.

Reviewed-by: danimo
Task-number: QTCREATORBUG-1142

Reviewed-By: Jens Bache-Wiig

Task-number: QTCREATORBUG-1116

Remove HTML-formatting and replace by properties set in constructor.
Use in forms.

- Fix typos
- Fix layout on OS X

Done with Danimo. Most changes are cosmetic but we modified
the tutorial listing and re-arranged some of the layouts to
better reflect the suggestions by Ergosign and Nigel.

Looks more structured now.