tdf#133640 Replace problematic colors to make links discernible

… and add back their default underlines, but dimmed.
I still think this looks busy, but I shall get used to it.
It’s more a11y-friendly this way.

Also, the old, green footer line is gone, since it doesn’t really
fit in since commit 4d6b5e5f74c50cc440a46fada8fa89ad2f946749.

Change-Id: Ie9feb3cc232ec249dbe323c2ec4b761c12e91ad6
(cherry picked from commit 4847445f1d2ba57767dfb3be236b112e7187a04d)
Reviewed-on: https://gerrit.libreoffice.org/c/help/+/97083
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
diff --git a/help3xsl/default.css b/help3xsl/default.css
index 8030eb5..4a78718 100644
--- a/help3xsl/default.css
+++ b/help3xsl/default.css
@@ -94,12 +94,12 @@
    background: #A0F3FF;
}
a {
    text-decoration: none;
    color: #0379BC;
    text-decoration-color: #D2D4DA;
    color: #3CA2E2;
}
a:hover {
    text-decoration: underline;
    color: #0499EE;
    color: #5FB3E7;
}
pre,
.code,
@@ -400,9 +400,7 @@
    white-space: nowrap;
}
footer {
    padding: 40px 10px 40px 10px;
    background-color: #FCFCFC;
    box-shadow: 0 2px 8px 0 rgba(0,0,0,.05);
    padding: 30px 20px;
}
footer p {
    font-size: 0.98rem;
@@ -541,7 +539,7 @@
    text-decoration: none;
}
li.active {
    background-color: #0379BC;
    background-color: #6E7487;
}
li.active a {
    color: #fff;
@@ -578,9 +576,7 @@
    top: 0px;
}
.donation{
    background: #0379BC;
    background-image: linear-gradient(to bottom, #3498db, #2980b9);
    border-radius: 8px;
    background: #6E7487;
    padding: 5px 10px 5px 10px;
    margin: auto;
    max-width: 200px;
@@ -590,14 +586,6 @@
.donation a {
    color: white;
}
.donation a:hover {
    color: white;
    text-decoration: none;
}
.donation:hover{
    background: #0379BC;
    background-image: linear-gradient(to bottom, #3cb0fd, #3498db);
}
.donation p {
    font-size:1.2rem;
    text-align: center;
@@ -729,7 +717,7 @@
}
.contents-current {
    background: rgba(0,0,0,0.05);
    border-left: 2px solid #0379BC;
    border-left: 2px solid #6E7487;
    font-weight: 600;
    margin-left: -12px;
    padding-left: 10px;
@@ -881,9 +869,6 @@
            justify-content: space-between;
            align-items: center;
        }
        footer {
            border-top: 2px solid #148603;
        }
        body {
            display: grid;
            grid-template-columns: 360px 100px 300px 1fr;