Merge pull request #1557 from DelazJ/VectorSymbolselector

fix #10472 : Enlarge btnSaveSymbol so it shows fully its text in all languages
Merge pull request #1552 from DelazJ/SaveAsDialog

Put by default to on the "Add layer to map canvas" option when saving new file (issue #6642)
[composer] Show selected items in bold in items tree panel (fix #11057)
Merge pull request #1549 from DelazJ/TableManager_GUI

Set 0 as default value of srid in DB_Manager dialogs (issue #7083)
Fix tab order in add relation dialog
[composer] Don't draw handles around locked items (fix #11059)
Referencing Help button function
Add slot on ContextHelp button
Merge pull request #1561 from DelazJ/ProjSelector

Activate the help button in select projection Dialog
indentation update
german translation update
Recompute webpage viewport dimensions when resizing html frames (Funded by Sourcepole QGIS Enterprise)
Call renderCachedImage after viewport has been computed
Update sip bindings, add method documentation
editor widgets: rename to wrapper to distinguish from the real widgets
CollapsibleGroupBox: hide content when collapsed
openFeatureForm: Update attributes on provided when used modal
Fix #11099
relation editor: use a public constructor, remove UI file

rename file according to class name
[custom widgets] add relation reference
QgsVectorLayer::uniqueValues() also returns uncommitted values