[trunk] Righ-click on tuplet or on a text brings up both Tuplet and Test prop dlg boxes

Setup: rev. 4493; Ubuntu 11.04, Qt SDK 1.1 (Qt lib 4.7.3) / Windows XP Qt SDK 10.04

Steps:

1) Load or create a score with texts (of most any kind) and/or tuplets
2) Right-click on a tuplet and select "Tuplet Properties"

OR

2) Right-click on a text and select "Text Properties"

Result: in both cases 2) above, the Tuplet Properties dlg box is shown and, after closing it, the Text Properties" dlg box is shown.

Note:

This is because, in the file mscore/mscore/mscore/propertymenu.cpp, the same string "t-props" is used to identify both the popup menu item for the tuplet and for the text.

To correct the issue, two different strings should be used, one for tuplets and one for texts.

The Text Props string is set in:
line 136 (function ScoreView::genPropertyMenuText()),
line 246 (function ScoreView::createElementPropertyMenu()),
line 337 (function ScoreView::createElementPropertyMenu())

and checked in line 548 (function ScoreView::elementPropertyAction())

The Tuplet Props string is set in:
line 179 (function ScoreView::createElementPropertyMenu())

and checked in line 439 (function ScoreView::elementPropertyAction())