UI enhancement: toggle panels, shortcuts, new icons, slimmer layout

rtdata/languages/default

@@ -322,6 +322,7 @@ MAIN_BUTTON_SAVEAS;As...
 MAIN_BUTTON_SAVE_TOOLTIP;Save current image <b>Ctrl+S</b>
 MAIN_BUTTON_SENDTOEDITOR;Send to editor
 MAIN_BUTTON_SENDTOEDITOR_TOOLTIP;Edit current image in external editor <b>Ctrl+E</b>
+MAIN_BUTTON_SHOWHIDESIDEPANELS_TOOLTIP;Show/hide all side panels <b>m</b>
 MAIN_BUTTON_UNFULLSCREEN;Exit fullscreen
 MAIN_FRAME_BATCHQUEUE;Batch Queue 
 MAIN_FRAME_BATCHQUEUE_TOOLTIP; Batch Queue  <b>Ctrl-F3</b> 
@@ -360,14 +361,16 @@ MAIN_TAB_TAGGING;Tagging
 MAIN_TAB_TRANSFORM;Transform
 MAIN_TOGGLE_BEFORE_AFTER;B|A
 MAIN_TOOLTIP_HIDEFP;Show/hide the bottom panel (directory and file browser) <b>F</b>
-MAIN_TOOLTIP_HIDEHP;Show/hide the left panel (including the history) <b>H</b>
+MAIN_TOOLTIP_HIDEHP;Show/hide the left panel (including the history) <b>l</b>
 MAIN_TOOLTIP_INDCLIPPEDH;Clipped highlight indication (Key <)
 MAIN_TOOLTIP_INDCLIPPEDS;Clipped shadow indication (Key >)
 MAIN_TOOLTIP_PREFERENCES;Set preferences
 MAIN_TOOLTIP_QINFO;Quick info on the image <b>I</b>
 MAIN_TOOLTIP_SAVE;Save image to the default folder
 MAIN_TOOLTIP_SAVEAS;Save image to a selected folder
-MAIN_TOOLTIP_SHOWHIDELP1;Show/hide the left panel <b>H</b>
+MAIN_TOOLTIP_SHOWHIDELP1;Show/hide the left panel <b>l</b>
+MAIN_TOOLTIP_SHOWHIDERP1;Show/hide the right panel <b>Alt-l</b>
+MAIN_TOOLTIP_SHOWHIDETP1;Show/hide the top panel <b>Shift-l</b>
 MAIN_TOOLTIP_TOGGLE;Toggle before/after view <b>B</b>
 NAVIGATOR_B_NA;B = n/a
 NAVIGATOR_B_VALUE;B = %1
@@ -579,7 +582,7 @@ SAVEDLG_SAVESPP;Save processing parameters with image
 SAVEDLG_TIFFFILTER;TIFF files
 SAVEDLG_TIFFUNCOMPRESSED;Uncompressed TIFF
 TOOLBAR_TOOLTIP_CROP;Crop selection <b>C</b>
-TOOLBAR_TOOLTIP_HAND;Hand tool <b>N</b>
+TOOLBAR_TOOLTIP_HAND;Hand tool <b>H</b>
 TOOLBAR_TOOLTIP_STRAIGHTEN;Straight line selection <b>S</b>
 TOOLBAR_TOOLTIP_WB;Spot white balance <b>W</b>
 TP_CACORRECTION_BLUE;Blue